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SMART

Atmel-11291A-ATARM-Low-Power-Design-for-SAMA5D3-based-Systems-Application-Note_23-Jun-14

Introduction

The Atmel® | SMART SAMA5D3 series is a high-performance, power-efficientembedded MPU. It features reduced power consump tion, making it an idealplatform for low-power applications, such as battery-powered devices.

This application note provides techniques to optimize the design of a SAMA5D3-based system in order to achieve the lowest power consumption possible.

The application note consists of three sections: Section 1 introduces the SAMA5D36 CPU Module Power Consumption

(CMP) board and its Linux demo. Section 2 presents the overall power consumption of SAMA5D36 in

different modes, including Low-power mode and Active mode. Section 3 explains how to optimize the power consumption for a SAMA5D3-

based system.

This application note should be used in conjunction with the SAMA5D3 Seriesdatasheet available on www.atmel.com.

APPLICATION NOTE

Design Optimization for a Low-PowerSAMA5D3-based System

Atmel | SMART SAMA5D3 Series

Design Optimization for a Low-Power SAMA5D3-based System [APPLICATION NOTE]Atmel-11291A-ATARM-Low-Power-Design-for-SAMA5D3-based-Systems-Application-Note_23-Jun-14

2

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1. SAMA5D36-CMP Board and Linux Demo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.1 SAMA5D36-CMP Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.2 Linux Demo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.3 Source Code Extraction and Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2. Power Consumption under Linux Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.1 Low-power Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.2 Linux Idle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.3 Dhrystone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.4 Audio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.5 LCD Controller (LCDC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.6 Image Sensor Interface (ISI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142.7 Gigabit EMAC (GMAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.8 USB Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3. Power Optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.1 Optimizing Power Consumption of the SAMA5D36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.2 Optimizing Power Consumption of External Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5. FAQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Appendix A. SAMA5D36-CMP Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

1. SAMA5D36-CMP Board and Linux Demo

1.1 SAMA5D36-CMP Board

SAMA5D36-CMP board (see Figure 1-1) is a CPU module designed to measure the power consumption of theSAMA5D36 device.

For complete schematics of the SAMA5D36-CMP RevC, refer to the appendix.

Note: Before using the CMP board, check the settings of all jumpers to ensure that they are in the default state asillustrated in Figure 1-2.

The CMP board is a CPU module (CM) board to be used in conjunction with the SAMA5D3-EK main board (MB).The main differences between the CMP board and the CM board are the jum pers that measure the powerconsumption of each rail of the SAMA5D36 product, the use of LPDDR2 instead of DDR2, and the powermanagement IC (PMIC).

Figure 1-1. SAMA5D36-CMP Overview

1.1.1 Jumper Settings

With one jumper on each power rail of the SAMA5D36 device, the CMP board features more jumpers than the CMboard, thus offering more precise measurement capabilities than the CM. This makes it possible to measure thecurrent of each power rail, thus facilitating the overall power consumption investigation/analysis of the SAMA5D36and external devices. This is of particular importance for low-power applications.

For detailed jumper settings on the CMP board, please refer to Figure 1-2.

1.1.2 Low-Power DDR2 (LPDDR2)

Low-power DDR2 memory (MT42L128M32D1GU-25 WT) is used on the CMP board instead of DDR2, which isused on the CM board. Its low -power advantage makes LPDDR2 a good memory replacement in low-powersystem design.

1.1.3 Power Management IC (PMIC)

The Active-Semi ACT8865 is the power management IC (PMIC) implemented on the CMP board. It supplies all theon-board components including the CPU and the memories, making it a complete and highly-efficient powermanagement solution.

SAMA5D36

256MB NAND Flash

512MB LPDDR232bit

128MbNOR Flash

1KbEEPROM

KSZ9031RNEthernet PHY PMIC

ATC8865

SAMA5D36-CMP

ButtonPower Rail Jumpers

32Mb Serial Flash

3Design Optimization for a Low-Power SAMA5D3-based System [APPLICATION NOTE]Atmel-11291A-ATARM-Low-Power-Design-for-SAMA5D3-based-Systems-Application-Note_23-Jun-14

Figure 1-2. CMP Default Jumper Settings

The CMP board is fully compatible with the Atmel SAMA5D3-EK evaluation kit. It can be used as a seamlessreplacement for the CM board of the Atmel SAMA5D3-EK, and functions with the main board (MB) and displaymodule (DM) board. In this application note, we develop a power consumption demonstration platform by replacingthe CM with a CMP in the standard SAMA5D3-EK, as shown in Figure 1-3.

Note: The CMP board is not for public sale. It is intended only for internal engineering purposes. For moreinformation on the CMP board, please contact your local Atmel representative or FAE.

Figure 1-3. Power Consumption Demo Platform

Note: For more details on the SAMA5D3-EK, refer to the SAMA5D3 Series Evaluation Kit User Guide available onwww.atmel.com.

DEFAULT

CLOSE

4

JP6

NOITCNUFECNEREFEREGAP

VDDIOM_MPU

VDDPLLACLOSE

JP8

4

4

4

4

4

4

4

4

4

4

4

CLOSE VDDIOP1_MPU

VDDIOP0_MPUCLOSEJP9

JP11 CLOSE VDDUTMII

VDDOSCJP12 CLOSE

JP2 CLOSE VDDCORE

JP4

JP15 CLOSE VDDIODDR_MPU_1V2

JP7 CLOSE VDDBU

JP13 CLOSE VDDANA

JP10 CLOSE FUSE_2V5

JP14 OPEN CM-3V3 to MB-3V3

JP17 V5_CCVESOLC4

4 JP18 CLOSE VCC_1V8


4 JP20 CLOSE VDDIOP1_GPHY

4 JP21 CLOSE VDDIODDR_1V2

JP22 CLOSE VCC_1V24

4 JP3 CLOSE VDDUTMIC

JP1 OPEN Disable SPI0_NPCS0 for Dataflash7

JP16 2V1_CCV morf 2V1 YHPG1-29

GPHY 1V2 from PMOS2-3

CMP

MB

DM


4

1.2 Linux Demo

The SAMA5D36-CMP board is delivered with a default Linux demo stored in the on-board NAND Flash. At power-up, in connection with the SAMA5D3x-MB and SAMA5D3x-DM boards, the demo starts running and plays a video.

The default Linux demo code together with this application note can be downloaded from:

ftp://ftp.linux4sam.org/pub/demo/sama5d36-cmp/

The demo archive contains: All component binaries:

sama5d3xek-nandflashboot-uboot-3.6.1.bin, u-boot.bin, sama5d36ek_cmp.itb, rootfs-sama5d3xek.ubi A TCL/SAM-BA script that interfaces with the SAM-BA tool to flash the demo:

sama5d3xek_demo_linux_nandflash.tcl A .bat script able to run the flashing script calling SAM-BA itself:

sama5d3xek_demo_linux_nandflash.bat

The Atmel SAMA5D36 integrates the full peripheral set available for the SAMA5D3 series, including an LCDcontroller, touch screen interface, CMOS sensor interface, Gigabit EMAC, 10/100 EMAC and a high-speed USBhost and device. The default Linux demo for the SAMA5D36-CMP is designed for the evaluation of theseperipherals. In addition, the demo has been designed to support the MB RevC/D/E, and any of the displaymodules, either the 5" with resi stive touchscreen, the TM4300 or the TM700 from PDA with capacitivetouchscreen..

If the on-board NAND Flash has been erased, the user may need to re-flash the default demo. To do so, follow theprocedure below:



1. Set up drivers/software environment by installing: JLink (\tools\Jlink\Setup_JLinkARM_V450j.zip): SAM-ICE driver JLinkCDC (\tools\Jlink OB DBGU\JLinkCDCInstaller_V1_2b.zip): USB serial port driver for debug

information display SAM-BA (\tools\SAM-BA2.12\sam-ba_2.12.zip): a tool used to program the on-board memory SAM-BA patch (tools\SAM-BA2.12\sam-ba_2.12_patchsama5d3xcmp.zip)

(Note: SAM-BA 2.12 formal release is for SAMA5D3-EK with DDR2 on CM board. To support the CMP board withLPDDR2, a pa tc h needs to be app l i ed . Ex t rac t the . z ip pa tch f i l e and unz ip i t , run sam-ba_2.12_patchsama5d3xcmp.exe by double-clicking it to apply the SAM-BA patch.)

2. Build the demo platform: Double-check the connection of the CM with the MB and the DM to make sure they are properly

connected and all jumpers are correctly set. Press PB4 CS_BOOT button to de-select the on-board serial Flash and the NAND Flash. Insert a 5V

power supply to power-up the demo board. Connect the demo board through J20 USB-A to the PC with a micro-USB cable. Check “Device Manager->Ports (COM & LPT)”. If “AT91 USB to Serial Converter (COMx)” appears,

then the USB connection between the demo board and PC is working.3. Download and program:

Unzip the demo package (\demo\linux4sam-buildroot-sama5d3xek-cmp-demo-v1.0.1.zip). In the demo archive, run sama5d3xek_demo_linux_nandflash.bat by double-clicking it to flash the on-board memory.

A log file (logfile.log) will pop up upon completion of demo flashing.4. Run the demo:

Re-plug the 5V power supply to run the Linux demo on the demo board. Use a micro-USB cable to connect the demo board through J14 to the PC, and open a hyperterminal

console window as (115200-8-N-1). On the console window, type “root” to log in:Welcome to Buildrootbuildroot login: root#

1.3 Source Code Extraction and Building

a) At91bootstrap:

Github: https://github.com/at91linux/at91bootstrap.git

Branch: wya/at91bootstrap-3.x-cmp

TAG: sama5d3x_cmp_v1.0

Commands to build binary:# make sama5d3xeknf_cmp_uboot_defconfig# make

Generated file:

sama5d3xek-nandflashboot-uboot-3.6.1.bin

b) u-boot:

Github: https://github.com/at91linux/u-boot-at91.git

Branch: u-boot-2013.07-at91-cmp



6

Commands to build binary:# make sama5d3x_cmp_nandflash

Generated file:

u-boot.bin

c) Linux:

Github: git://github.com/at91linux/linux-at91.git

Branch: wya/linux-at91-cmp


Commands to build binary:# ./build_cmp_all.sh

Generated file:

sama5d36ek_cmp.itb

d) buildroot (the same as SAMA5D3 series release):

Github: git://github.com/linux4sam/buildroot-at91.git

Branch: buildroot-2013.02-at91

Commands to build binary:# make sama5d3ekdemo_defconfig# make

Generated file:

rootfs-sama5d3ek.ubi


2. Power Consumption under Linux Scenarios

The SAMA5D3 series is based on the ARM® Cortex™-A5 processor and offers a good balance betweenperformance and power consumption. Typical application scenarios have been selected to illustrate the highperformance levels of the SAMA5D3, its rich connectivity and multimedia features and its low power consumption.

This section gives a detailed description of each scenario, as well as the typical power consumption data for each.All power consumption data were measured based on: HW demo board: default demo platform (RevD MB+5” LCD+RevC CMP) SW demo package: linux4sam-buildroot-sama5d3xek-cmp-demo-v1.0.1.zip Measurement equipment: Agilent 34410A 6(1/2) Digit Multimeter

The power consumption data may vary slightly depending on the revision of the MB, the LCD, the CMP and themeasurement equipment used.

Note: In some cases, the “top” comm and is used to get the real-tim e CPU usage value (%), which is (1-CPU_idle%).

# topMem: 21008K used, 492708K free, 0K shrd, 0K buff, 6520K cachedCPU: 36% usr 0% sys 0% nic 63% idle 0% io 0% irq 0% sirq

For example, in the above log information, if the CPU idle percentage is 63%, then the CPU usage value is 37%.

2.1 Low-power Modes

In most cases, at least two low-power modes must be implemented in an operating system – Standby mode andSuspend mode.

In Standby mode, the SAMA5D3 is in Idle mode, and the core is in Wait for Interrupt mode. Most peripherals arestill enabled and running. The internal bus is in High-speed mode for fast system restoration.

In Suspend mode, the SAMA5D3 is in Ult ra-low-power mode with a 512 Hz MCK. The core is in Wait for Interruptmode, and most peripherals are disabled and not running. The internal bus is set to Low-spe ed mode for furtherpower savings.

To build this scenario, stop auto-boot in U-Boot and set loader options for this case:U-Boot 2013.07-00054-gd757001 (Feb 25 2014 - 14:03:56)CPU: SAMA5D36Crystal frequency: 12 MHzCPU clock : 528 MHzMaster clock : 132 MHzDRAM: 512 MiBNAND: 256 MiBIn: serialOut: serialErr: serialNet: No ethernet found.Hit any key to stop autoboot: 0U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_pm'U-Boot>boot

After the operating system starts up, log in and type commands to enter the system into the low-power modesseparately:

Welcome to Buildrootbuildroot login: root# echo standby >/sys/power/state// echo mem >/sys/power/state


8

PM: Syncing filesystems ... done.Freezing user space processes ... (elapsed 0.01 seconds) done.Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.LDO_REG7: No configurationLDO_REG6: No configurationFUSE_2V5: No configurationVDDANA: No configurationSuspending console(s) (use no_console_suspend to debug)PM: suspend of devices complete after 218.937 msecsPM: late suspend of devices complete after 0.407 msecsPM: noirq suspend of devices complete after 0.391 msecs

The power consumption data for each power rail of the SAMA5D36 is listed below for reference.

Notes: 1. For Linux Standby mode, the SAMA5D36 is in Idle mode, while some peripherals such as the timer, DDR2 controller and DBGU serial port must be enabled.

2. For Linux Suspend mode, the SAMA5D36 is in ULP (Ultra-low-power) 512 Hz mode. In the SAMA5D3 series datasheet, the power consumption for ULP 512Hz is given as 1.2V × 0.40 mA. In this case, due to the lower supply voltage (1.15V), the actual power consumption is 1.15V × 0.36 mA.

Touch the keypads on the DM board to wake up the demo. The system will resume all the suspended drivers andprint the wake-up time on the hyperterminal:

PM: noirq resume of devices complete after 0.315 msecsPM: early resume of devices complete after 0.358 msecsPM: resume of devices complete after 180.424 msecsRestarting tasks ... done.Vddcore suspend finish voltage 1250mV#

Use Case: Low Power Modes (command: echo standby > /sys/power/state) (command: echo mem > /sys/power/state)Operation Setting: LPDDR2 in self-refresh modeUsed Peripheral: NAND, DBGU, MPDDRC, GPIO

Power Rail Voltage Range (V) Voltage (V) Current (mA)

Power Consumption

(mW)Current (mA) Power Consumption

(mW)

VDDCORE(JP2) 1.1 ~ 1.32 1.15 29.69 34.14 0.36 0.41

VDDIODDR(JP15) 1.7 ~ 1.91.14 ~ 1.30 1.15 0.0017 0.00 0.0016 0.00

VDDIOM(JP6) 1.65 ~ 1.93.0 ~ 3.6 3.3 0.0061 0.02 0.0061 0.02

VDDIOP0(JP9) 1.65 ~ 3.6 3.3 0.0076 0.03 0.0076 0.03VDDIOP1(JP8) 1.65 ~ 3.6 3.3 0.0046 0.02 0.0046 0.02VDDBU(JP7) 1.65 ~ 3.6 3.25 0.0022 0.01 0.0022 0.01

VDDUTMIC(JP3) 1.1 ~ 1.32 1.15 0.0095 0.01 0.0014 0.00VDDUTMII(JP11) 3.0 ~ 3.6 3.3 0.0001 0.00 0.0001 0.00VDDPLLA(JP4) 1.1 ~ 1.32 1.15 7.73 8.89 0.0002 0.00VDDOSC(JP12) 1.65 ~ 3.6 3.3 0.43 1.42 0.0001 0.00VDDANA(JP13) 3.0 ~ 3.6 3.32 0.0032 0.01 0.0032 0.01VDDFUSE(JP10) 2.25 ~ 2.75 2.51 0.0001 0.00 0.0001 0.00

Total 45 0.50

Standby (MCK=PCK=132MHz) Suspend to Mem (MCK=PCK=512Hz=32768Hz(osc)/64)


2.2 Linux Idle

In this scenario, the Linux system is running without any workload (CPU usage is close to 0). Power consumptionfor this scenario is measured as the reference for other scenarios. By comparison, we can see how the currentchanges on each power rail when special features are enabled and in use.

To build up this scenario, stop auto-boot in U-Boot and set loader options for this case:Hit any key to stop autoboot: 0U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_pm'U-Boot>boot

After the operating system starts up, log in:Welcome to Buildrootbuildroot login: root#


Use Case: Command prompt after login, No application running, no LCD displayOperation Setting: MCK: 132MHz, PCK: 528MHz, LPDDR2: 132MHzUsed Peripheral: NAND, DBGU, MPDDRC


Power Consumption

(mW)VDDCORE(JP2) 1.1 ~ 1.32 1.25 44.97 56.21

VDDIODDR(JP15) 1.7 ~ 1.91.14 ~ 1.30 1.25 4.46 5.58

VDDIOM(JP6) 1.65 ~ 1.93.0 ~ 3.6 3.3 0.053 0.17

VDDIOP0(JP9) 1.65 ~ 3.6 3.3 0.0079 0.03VDDIOP1(JP8) 1.65 ~ 3.6 3.3 0.0046 0.02VDDBU(JP7) 1.65 ~ 3.6 3.25 0.002 0.01

VDDUTMIC(JP3) 1.1 ~ 1.32 1.25 0.011 0.01VDDUTMII(JP11) 3.0 ~ 3.6 3.3 0.0001 0.00VDDPLLA(JP4) 1.1 ~ 1.32 1.25 8.06 10.08VDDOSC(JP12) 1.65 ~ 3.6 3.3 0.43 1.42VDDANA(JP13) 3.0 ~ 3.6 3.32 0.0031 0.01VDDFUSE(JP10) 2.25 ~ 2.75 2.51 0.0001 0.00

Total 74


10

2.3 Dhrystone

In this scenario, Dhrystone, a typical computing benchmark program, is used to evaluate the contribution of theARM core to power consumption figures. The Dhrystone program is compiled with the same toolchain as kernelbui lding. The Dhrystone source code and binary can be extracte d from APP\dhrystone\ at FTP:ftp://ftp.linux4sam.org/pub/demo/sama5d36-cmp/.

In this case, the CPU usage accounts for almost 99% of the overall power consumption.

To build this scenario, stop auto-boot in U-Boot and set loader options for this case:Hit any key to stop autoboot: 0U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_dhrystone'U-Boot>boot


Insert an SD card containing Dhrystone and copy Dhrystone to NAND Flash:# mount /dev/mmcblk0p1 /mnt# cp /mnt/dhrystone ./

Unmount SD card and remove it from the demo board:# umount /mnt

Run Dhrystone:# ./dhrystone


Note: By comparing this scenario with the “Linux Idle” scenario, we can see that the power consumption contribution of the ARM core lies only in VDDCORE.

Use Case: Active Power Consumption (running Dhrystone: 599DMIPS)Operation Setting: MCK: 132MHz, PCK: 528MHz, LPDDR2: 132MHzUsed Peripheral: NAND, DBGU, MPDDRC, HSMCI


Power Consumption

(mW)VDDCORE(JP2) 1.1 ~ 1.32 1.25 130.63 163.29

VDDIODDR(JP15) 1.7 ~ 1.91.14 ~ 1.30 1.25 4.46 5.58

VDDIOM(JP6) 1.65 ~ 1.93.0 ~ 3.6 3.3 0.053 0.17



Total 181



2.4 Audio

Audio playback is an essential feature for smart devices. In this scenario, the SAMA5D36 is configured to performMP3 decoding and playing function.

To build this scenario, stop auto-boot in U-Boot and set loader options for this case:Hit any key to stop autoboot: 0U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_audio'

------------------------------------------------------------------------------------------------------------------------------------------------------------------------Note: The DTB file in loader options differs for different revisions of the MB.For RevC MB:

U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_revc_audio'

------------------------------------------------------------------------------------------------------------------------------------------------------------------------

U-Boot>boot


Insert an SD card containing an MP3 file and launch the following commands:# mount /dev/mmcblk0p1 /mnt# cd /mnt# lstellmewhy.mp3# madplay tellmewhy.mp3

# cd ../# umount /mnt


Operatino Setting: MCK: 132MHz, PCK: 528MHz, LPDDR2: 132MHzUsed Peripheral: NAND, DBGU, MPDDRC, SSC, HSMCI


Power Consumption

(mW)VDDCORE(JP2) 1.1 ~ 1.32 1.25 55.53 69.41

VDDIODDR(JP15) 1.7 ~ 1.91.14 ~ 1.30 1.25 4.73 5.91

VDDIOM(JP6) 1.65 ~ 1.93.0 ~ 3.6 3.3 0.042 0.14



Total 96

Use Case: MP3 Audio Playback (Mp3 file in SD card, 128Kbps, 44.1KHz sample rate,2 channels)


12

2.5 LCD Controller (LCDC)

This scenario is designed to evaluate the power consumption of the LCD controller, which is typically used formultimedia display. By default, the SAMA5D36-CMP demo launches a video. During video playing, the CPUusage is approximately 45%, mainly for video software decoding.

To build this scenario, stop auto-boot in U-Boot and set loader options for this case:Hit any key to stop autoboot: 0U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_lcd'

------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Note: The DTB file in loader options differs for different DM.For PDA 4.3”:

U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm

0x22000000#conf@ sama5d36ek_pda4_lcd'

For PDA 7”:U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm

0x22000000#conf@ sama5d36ek_pda7_lcd'

------------------------------------------------------------------------------------------------------------------------------------------------------------------------

U-Boot>boot



Operation Setting: MCK: 132MHz, PCK: 528MHz, LPDDR2: 132MHzUsed Peripheral: NAND, DBGU, MPDDRC, LCDC, GPIO


Power Consumption

(mW)VDDCORE(JP2) 1.1 ~ 1.32 1.25 85.41 106.76

VDDIODDR(JP15) 1.7 ~ 1.91.14 ~ 1.30 1.25 6.44 8.05

VDDIOM(JP6) 1.65 ~ 1.93.0 ~ 3.6 3.3 0.14 0.46



Total 167

Use Case: Video playback (LCDC: base layer, 800*480*24 bits, 45 fps; 480*272 MPEG2, software decoding)


2.6 Image Sensor Interface (ISI)

This scenario is designed to evaluate the power consumption of the image sensor interface, which is used forimage sensor preview. By default, the SAMA5D36-CMP demo supports several sensor modules includingOV5640/OV2640/OV2643.

To build this scenario, stop auto-boot in U-Boot and set loader options for this case:Hit any key to stop autoboot: 0U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_isi'

------------------------------------------------------------------------------------------------------------------------------------------------------------------------Note: The DTB file in loader options differs for different revisions of the MB and the DM.For PDA 4.3”:

U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_pda4_isi'

For PDA 7”:U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_pda7_isi'

For RevC MB:U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_revc_isi'U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_revc_pda4_isi'U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_revc_pda7_isi'

------------------------------------------------------------------------------------------------------------------------------------------------------------------------

U-Boot>boot


Stop the default video playing:# psPID USER COMMAND 1 root init … 619 root {go.sh} /bin/sh /root/go.sh 620 root -sh 624 root gst-launch-0.10 filesrc location=/root/MPEG2_480_272.avi ! avide 629 root ps# kill -9 619 (The PID may differ each time)# kill -9 624 (The PID may differ each time)

Start the image sensor preview:# ls /sys/class/video4linuxvideo0# cat /sys/class/video4linux/video0/nameisi-camera# gst-launch v4l2src device="/dev/video0" ! video/x-raw-yuv,width=640,height=480 ! ffmpegcolorspace ! fbdevsink


14


Use Case: Image Sensor preview (Image Sensor: OV5640, VGA 640*480, YUV422)Operation Setting: MCK: 132MHz, PCK: 528MHz, LPDDR2: 132MHzUsed Peripheral: NAND, DBGU, MPDDRC, ISI, LCDC, GPIO


Power Consumption

(mW)VDDCORE(JP2) 1.1 ~ 1.32 1.25 79.67 99.59

VDDIODDR(JP15) 1.7 ~ 1.91.14 ~ 1.30 1.25 8.16 10.20

VDDIOM(JP6) 1.65 ~ 1.93.0 ~ 3.6 3.3 0.13 0.43



Total 184


2.7 Gigabit EMAC (GMAC)

iPerf is a tool to measure the maximum bandwidth for TCP and UDP. By default, it is included in the SAMA5D36-CMP demo. To proceed, set up the Gigabit Ethernet network and start the measurement.

To build this scenario, stop auto-boot in U-Boot and set loader options for this case:Hit any key to stop autoboot: 0U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_gmac'U-Boot>boot

After OS starts up, log in:Welcome to Buildrootbuildroot login: root#

Use an Ethernet cable to connect the Gigabit Ethernet ports of both the evaluation kit and the PC, as illustratedbelow:

Set up the evaluation kit as the server with the following commands: # ifconfig eth0 192.168.3.2# iperf -u –s

Set up the PC as the client and then start data transfer to the PC with the following commands:# ifconfig eth0 192.168.3.3# iperf -u -c 192.168.3.2 -t 120 -i 1 -b 300M


PCClient

SAMA5D36 Server

MAC EMAC GMAC

Use Case: Running as iPerf serverOperatino Setting: MCK: 132MHz, PCK: 528MHz, LPDDR2: 132MHzUsed Peripheral: NAND, DBGU, MPDDRC, GMAC


Power Consumption

(mW)VDDCORE(JP2) 1.1 ~ 1.32 1.25 95.24 119.05

VDDIODDR(JP15) 1.7 ~ 1.91.14 ~ 1.30 1.25 8.38 10.48

VDDIOM(JP6) 1.65 ~ 1.93.0 ~ 3.6 3.3 0.062 0.20



Total 175


16

2.8 USB Host

Bonnie++ is a benchmark tool to test hard drive and file system performance. The Bonnie++ source code can bedownloaded for free from http://sourceforge.net/projects/bonnie/. In this case, Bonnie++ is compiled with the sametool-chain as kernel building. The Bonnie++ source code and binary can be extracted from APP\bonnie\ at FTP:ftp://ftp.linux4sam.org/pub/demo/sama5d36-cmp/.

To measure the typical power consumption of the USB peripheral, the test must be run from a USB disk. The testlasts about 30 minutes, depending on the speed of the USB disk. The maximum CPU usage may be as high as90%.

To build up this scenario, stop auto-boot in U-Boot and set loader options for this case:Hit any key to stop autoboot: 0U-Boot>setenv bootcmd 'nand read 0x22000000 0x00200000 0x00400000; bootm 0x22000000#conf@sama5d36ek_usb'U-Boot>boot


Plug a USB disk containing the benchmark test (Bonnie++) and launch the following commands:# mount -t vfat /dev/sda1 /mnt# cd /mnt

# lsbonnie++ # ./bonnie\+\+ -d ./test -s 1000 -u 0Using uid:0, gid:0.Writing with putc()...doneWriting intelligently...doneRewriting...doneReading with getc()...doneReading intelligently...donestart 'em...done...done...done...Create files in sequential order...done.Stat files in sequential order...done.Delete files in sequential order...done.Create files in random order...done.Stat files in random order...done.Delete files in random order...done.Version 1.03e ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CPbuildroot 1000M 3338 75 6674 1 4191 5 4354 95 21745 21 1318 27 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 13 95 +++++ +++ 196 99 20 96 +++++ +++ 45 59buildroot,1000M,3338,75,6674,1,4191,5,4354,95,21745,21,1318.1,27,16,13,95,+++++,+++,196,99,20,96,+++++,+++,45,59

# cd ../# umount /mnt




Use Case: Run Bonnie++(Version: 1.03e command: ./bonnie++ -u 0) on USB diskOperatino Setting: MCK: 132MHz, PCK: 528MHz, LPDDR2: 132MHzUsed Peripheral: NAND, DBGU, MPDDRC, USB Host


Power Consumption

(mW)VDDCORE(JP2) 1.1 ~ 1.32 1.25 116.01 145.01

VDDIODDR(JP15) 1.7 ~ 1.91.14 ~ 1.30 1.25 5.53 6.91

VDDIOM(JP6) 1.65 ~ 1.93.0 ~ 3.6 3.3 0.047 0.16



Total 281


18

3. Power Optimization

3.1 Optimizing Power Consumption of the SAMA5D36

In this section, we provide techniques to optimize the power consumption of the SAMA5D36 using power rails,clock settings, peripheral settings, working mode selection and I/O setting.

3.1.1 SAMA5D36 Power Rails

Table 3-1 lists the parts of the SAMA5D36 powered by different power rails. Understanding the power behavior ofthese power rails helps to optimize their use. Also, the power consumption parameters provided in the SAMA5D3series datasheet help to estimate the power consumption of the SAMA5D36 in a real application.

3.1.1.1 VDDCORE

VDDCORE powers the processor, embedded memories and all peripherals.

The SAMA5D3 features three low-power modes: Idle, Ultra-low-power and Backup. Depending on the modeimplemented on the SAMA5D3, the power consumption on VDDCORE can be lowered to different levels (refer tothe SAMA5D3 datasheet for detailed numbers).

When the processor goes into Ultra-low-power mode, power consumption and MCK frequency decrease. Thelower the CPU MCK frequency, the less power it consumes, and the longer the wake-up time becomes.

Suggestion: Select the appropriate MCK frequency for Ultra-low-power mode depending on the requirements ofapplication performance and wake-up speed.

Note: Put the core into Idle mode to save power when no tasks are in process.

Table 3-1. SAMA5D3 Power Supplies

NameVoltage Range, Nominal

Associated Ground Powers

VDDCORE 1.1–1.32V, 1.2V GNDCORE The core, including the processor, the embedded memories and the peripherals

VDDIODDR1.7–1.9V, 1.8V

1.14–1.30, 1.2VGNDIODDR

LPDDR/DDR2 Interface I/O lines

LPDDR2 Interface I/O lines

VDDIOM1.65–1.95V, 1.8V

3.0–3.6V, 3.3VGNDIOM NAND and HSMC Interface I/O lines

VDDIOP0 1.65–3.6V GNDIOP Peripheral I/O lines

VDDIOP1 1.65–3.6V GNDIOP Peripheral I/O lines

VDDBU 1.65–3.6V GNDBU The Slow Clock Oscillator, the internal 32 kHz RC Oscillator and a part of the System Controller

VDDUTMIC 1.1–1.32V, 1.2V GNDUTMIThe USB device and host UTMI+ core

The UTMI PLL

VDDUTMII 3.0–3.6V, 3.3V GNDUTMI The USB device and host UTMI+ interface

VDDPLLA 1.1–1.32V, 1.2V GNDPLL The PLLA cell

VDDOSC 1.65–3.6V GNDOSC Main Oscillator Cell and PLL UTMI. If PLL UTMI or USB is used, the range is to be 3.0V to 3.6V.

VDDANA 3.0–3.6V, 3.3V GNDANA Analog-to-Digital Converter

VDDFUSE 2.25–2.75V, 2.5V GNDFUSEFuse box for programming.

It can be tied to ground with a 100 Ω resistor for fuse reading only.


3.1.1.2 VDDIODDR

The current into VDDIODDR depends on the external memory devices and speed. Its range can vary from almost0 to a much higher value.

For the LPDDR2 on the CMP board, the voltage of the memory IOs is 1.25V and MCK is set to 132 MHz. After memory initialization, the current is about 4.5 mA with no data access. This current will increase with

more data access (read and write), achieving up to 10.9 mA. For memory Self-refresh mode, the current is as low as 2~3 uA.

In comparison, for the DDR2 on the CM board, with voltage of memory IOs at 1.8V and the MCK set to 132 MHz,,the current into VDDIODDR ranges from 15 mA to 20 mA.

3.1.1.3 VDDIOM, VDDIOP0 and VDDIOP1

These three power rails power most I/Os of SAMA5D3 (refer to section 4 “Package and Pinout” in datasheet). Anyperipheral activity may affect the current value on the corresponding power rail.

3.1.1.4 VDDBU

VDDBU powers the Slow Clock oscillator, the internal 32 kHz RC oscillator and a part of the System Controller.

Suggestion: To reduce power consumption on VDDBU, make sure that the unused oscillator is disabled whenswitching between the external and internal oscillators..

Note: The internal 32 kHz RC oscillator is used in ROM code for fast boot-up, though its frequency precision islower than that of the external crystal oscillator.

3.1.1.5 VDDOSC, VDDUTMIC and VDDUTMII

VDDOSC powers the main oscillator cell and part of the PLL UTMI.

VDDUTMIC powers the USB device and host UTMI+ core.

Once the USB transceiver is enabled, approximately 5.5 mA will be consumed on this power rail. There will be anincrease of approximately 2.5 mA for device or host transfer.

VDDUTMII powers the USB device and host UTMI+ interface.

There is a total of three USB ports. Each port causes an increase of about 18 mA of current in VDDUTMII after theUSB connection is set up.

Suggestion: To reduce power consumption on these three power rails, disable the USB transceiver as well as theUTMI PLL if the USB is not necessary in the application.

3.1.1.6 VDDPLLA

The PLL output frequency ranges from 400 MHz to 1000 MHz. The higher the output frequen cy, the higer thepower consumption. Thus it is important to define an appropriate clock tree for the system and then set up theoscillator and PLLs accordingly.

For example, if PCK = 400 MHz, more power is saved by setting PCK = PLL = 400 MHz instead of PLL = 800 MHzand PCK=PLL/2.

3.1.1.7 VDDANA

VDDANA supplies the Analog-to-Digital Converter and its IOs only. When the ADC is not in use or in Sleep mode,the current through this power rail is only several µA.

3.1.1.8 VDDFUSE

During FUSE programming, the maximum current through VDDFUSE may reach 40 mA. Under other conditions,such as FUSE reading or no action, power consumption is close to 0.


20

3.1.2 System Clock

Master clock (MCK) is the clock provided to memory controllers and all peripherals. When the processor and allperipherals are idle and no task is being processed, the base consumption on VDDCORE mainly depends on MCKfrequency, whether the PCK is equal to 2 × MCK, 3 × MCK, or 4 × MCK. The PCK frequency only affects the CPUperformance.

Table 3-2 shows the power consumption in Linux Idle mode with different MCK. We can see that the powerconsumption on VDDCORE in Idle mode is proportional to MCK frequency (~ 0.32 mA/MHz).

Suggestion: Select the appropriate PCK depending on application requirements.

Then set MCK to 1/4 × PCK.

3.1.3 Peripherals

The peripherals can be divided into three categories depending on their behavior regarding power consumption(VDDCORE). Refer to the table “Power Consumpti on by Peripheral in Active Mode (TA 25°C, TA 85°C and TA105°C)” in the Electrical Characteristics section in the SAMA5D3 datasheet.

3.1.3.1 Category I

Each peripheral in this category consumes a constant amount of power as long as it is enabled, with the powe rconsumption value directly proportional to its working frequency.

For example, when the USART is enabled, its power consumption is:

3.0 µA/MHz(1) × working frequency(2)

Note (1): 3.0 uA/MHz is the USART consumption per MHz.

Table 3-2. VDDCORE Consumption Vs. MCK

OS IdleMCK=132 MHzPCK=528 MHz,

VDDCORE=1.25V

OS IdleMCK=132 MHz

PCK=396 MHz

OS IdleMCK=88 MHz

PCK=264 MHz

OS IdleMCK=50 MHz

PCK=200 MHz

Power Rail

Voltage

(V)

Current

(mA)

Power Consumption

(mW)Current

(mA)

Power Consumption

(mW)Current

(mA)

Power Consumption

(mW)Current

(mA)

Power Consumption

(mW)

VDDCORE(JP2) 1.2 42.18 52.73 41.89 50.27 28.09 33.71 18.38 22.06

VDDIODDR(JP15) 1.2 4.33 5.41 4.23 5.08 2.84 3.41 1.63 1.96

VDDIOM(JP6) 3.3 0.079 0.26 0.08 0.26 0.079 0.26 0.079 0.26

VDDIOP0(JP9) 3.3 0.083 0.27 0.083 0.27 0.083 0.27 0.082 0.27

VDDIOP1(JP8) 3.3 0.17 0.56 0.17 0.56 0.17 0.56 0.17 0.56

VDDBU(JP7) 3.25 0.0013 0.00 0.0013 0.00 0.0013 0.00 0.001 3 0.00

VDDUTMIC(JP3) 1.2 0.0099 0.01 0.0093 0.01 0.0086 0.01 0.008 3 0.01

VDDUTMII(JP11) 3.3 0.0002 0.00 0.0002 0.00 0.0002 0.00 0.000 2 0.00

VDDPLLA(JP4) 1.2 7.81 9.76 9.99 11.99 7.82 9.38 10.01 12.01

VDDOSC(JP12) 3.3 0.42 1.39 0.42 1.39 0.42 1.39 0.42 1.39

VDDANA(JP13) 3.32 0.0032 0.01 0.0032 0.01 0.0032 0.01 0.003 2 0.01

VDDFUSE(JP10) 2.51 0.0002 0.00 0.0002 0.00 0.0002 0.00 0.000 2 0.00

Total 70 70 49 39

VDDCOREConsumption

Per MCK 0.32 0.40 0.32 0.38 0.32 0.38 0.37 0.44


Note (2): The working frequency is not always equal to MCK.

The Soft Modem (SMD) is a special case, with its power consumption dependent on its clock source instead of itsworking frequency. Linear with the MCK, thus its power consumption is:

5.5 µA/MHz(3) × MCK

Note (3): 5.5 uA/MHz is the SMD consumption per MHz.

3.1.3.2 Category II

The power consumption of the peripherals in this category is related to their transfer speed.

For example, for the high-speed USB Host, when CPU usage is 24%, the UHPHS power consumption is:

(9.6 × transfer speed (Mb/s) + 12) µA/MHz × MCK

Note: For UHPHS/UDPHS, LCDC, EMAC/GMAC, the power consumption already includes the MPDDRCconsumption on VDDCORE.

3.1.3.3 Category III

The power consumption of each peripheral in this category is related to its bandwidth usage.

An example is the MPDDRC. Figure 3-1 shows the correlation between MPDDRC power consumption and itsbandwidth.

Figure 3-1. Correlation between Consumption and Bandwidth

The increase in power consumption is linear with MCK (with the same bandwidth usage condition). Figure 3-2shows the relation between power consumption increase and MCK (with the same bandwidth).

y = 31.82x + 46.598R² = 0.997

50515253545556575859

0.00 0.10 0.20 0.30 0.40

Cur

rent

uA

/MH

z

Bandwidth Usage

Full FIFO

Series1

Linear (Series1)

y = 40.899x + 46.773R² = 0.9998

01020304050607080

0.00 0.20 0.40 0.60

Cur

rent

uA

/MH

z

Bandwidth Usage

Half FIFO

Series1

Linear (Series1)


22

Figure 3-2. Linearity between Consumption Increase and MCK

3.1.4 VDDCORE Power Consumption Model

With the power consumption information extracted from the datasheet, we can estimate the overall consumptionon each power rail.

Note: Compared to VDDCORE, other power rails do not contribute much to overall power consumption. For thisreason, the focus in this section is on the power consumption model of VDDCORE.

The overall consumption on VDDCORE can be calculated by the formula:

IVDDCORE_overall = IVDDCORE_idle + (IVDDCORE_dhrystone – IVDDCORE_idle) × CPU_usage (%) + IVDDCORE_peripheral_1 + …+ IVDDCORE_peripheral_n

With the GMAC use case as an example: MCK is 132 MHz, PCK is 528 MHz. USART and GMAC are both enabled. CPU usage is 24%. GMAC transfer speed is 300 Mb/s.

Therefore the theoretical overall consumption on VDDCORE is:

IVDDCORE_overall = 24 mA + (117 mA - 24 mA) × 24% + (1.2 uA × 300 Mb/s + 36 uA) × 132 MHz / 1000+ 3.0 uA × 132 MHz / 1000 = 99.02 mA

Note: IVDDCORE_idle: VDDCORE power consumption in Idle mode (24 mA, refer to the SAMA5D3 datasheet)

Note: IVDDCORE_dhrystone: VDDCORE Power Consumption in Active Mode running Dhrystone (117 mA, refer to the SAMA5D3 datasheet).

The calculated theoretical result is aligned with the measured value: 95.24 mA.

Note: The calculated theoretical value is only for reference. The final data should be based on the realmeasurement result.

Suggestions:

1. Disable any peripherals not implemented in the user application to avoid unnecessary power consumption.

Note: Disabling the USB is not sufficient to ensure that it consumes no power. In addition, the USB transceiversmust also be disabled.

2. Use the minimum peripheral clock rate (MCK/8, /4, /2).

0

0.5

1

1.5

2

2.5

3

3.5

4

33 66 100 132 165

Current (mA)

MCK (MHz)

MPDDRC Increase (49% bandwidth)) vs. Master Clock

Total


3.1.5 Power Supply

Set the power supply voltage to a minimum value depending on the corresponding working conditions: 1.15V ± 5% for VDDCORE in Linux Suspend-to-mem mode 1.2V ± 5% (PLL < 800 MHz) or 1.25 V ± 5% (PLL >= 800 MHz) in Active mode

The power management IC (Active-Semi PMIC)makes it possible to adjust the core voltage dynamically. Normally,core and PLL supply must be set to 1.25V to reach their maximum speed. If PCK ≤ 400 MHz, 1.15V is enough tosave power.

3.1.6 Multi-port DDR-SDRAM Controller (MPDDRC)

For the Multi-port DDR-SDRAM Controller (MPDDRC), external impedance match resistors are not necessarybecause the MPDDRC already has internal impedance matched. Therefore, adding external resistors may lead tohigher consumption.

Suggestions:

1. Do not add external impedance match resistors for MPDDRC.

2. Set the memory refresh cycle properly. Generating too many refresh commands will lower the memorybandwidth and SAMA5D3 performance.

3.1.7 GPIO

In Low-power modes, the I/O state of SAMA5D3 can influence the power consumption of the external devices.

For example, for some bidirectional I/Os with external pull-up/pull-down resistors, their states are uncertain whenthe CPU enters Low-power modes. This may lead to extra power consumption.

Suggestion: Correctly configure the PIO to pull-up/pull-down, input/output, output (0/1) state.

Using the Soft Modem as an example, set its two pads (DIBP to Pull-up state, DIBN to Pull-down state) tominimize power consumption.


24

3.2 Optimizing Power Consumption of External Devices

To minimize overall system-level power consumption, the power consumption of external devices must be takeninto consideration.

3.2.1 General Guidelines

Check the specification of each external device for the correlation between power consumption and the differentworking modes, then configure the device to work in the appropriate power mode.

If the low-power requirement is still not met, shut down the external device by directly switching off its power supplywhen it is not used.

3.2.2 Examples on SAMA5D36-CMP Demo Board

3.2.2.1 LPDDR2

The SAMA5D3 supports DDR2 and LPDDR2, both of which can be set in Self-refresh mode when the Linux OSenters Standby/Suspend mode. It is recommended to use LPDDR2 instead of DDR2 in low-power applicationsbecause the power consumption level of LPDDR2 is only about 1/3 of that of DDR2 (refer to Table 3-3 for details),with both running at the same frequency. In addition, LPDDR2 can work at a much lower frequency thus savingmore power, while there is a minimum frequency limitation for DDR2.

Table 3-3 provides the power consumption comparison between LPDDR2 (on CMP) and DDR2 (on CM).

Note: The LPDDR2 module on the CMP board is MT42L128M32D1GU-25 WTA (512 MB, 32-bit); the DDR2module on the CM board is MT47H128M16RT-25 (256 MB, 16-bit).

3.2.2.2 Gigabit Ethernet PHY

The GMAC PHY chip (KSZ9031RNX) on the SAMA5D3 demo board has two power-down modes: software power-down and chip power-down. The consumption in chip power-down mode is lower than that in software power-down mode. However, it is important to note that once the GMAC PHY enters into chip power-down mode, the onlyway to exit is by hardware reset.

3.2.2.3 Device Shutdown

If the LCD is not used, ensure that the LCD backlight is turned off, as it has the highest power consumption of thesystem. Put the LCD control IC into Standby mode. Ensure that the LCDC is disabled in the SAMA5D36.

By implementating the suggestions for consumption optimization, the power consumption of the correspondingexternal devices can be reduced. Table 3-4 shows the change in power consumption figures after implementingthe power-saving techniques on the SAMA5D36-CMP board.

Table 3-3. Power Consumption Comparison between LPDDR2 and DDR2

Current (µA) from Datasheet

400 MHz Self-refresh Mode

LPDDR2

MT42L128M32D1GU-25 WTA122000 5683

DDR2 * 2

MT47H128M16RT-25E:C324000 28800


4. Conclusion

The SAMA5D3 series targets low-power applications. Its power consumption is significantly lower compared tosome competitors’ similar products in both low-power and in active modes, without reduced performance levels.The SAMA5D3 is suitable for low-power applications, such as portable devices that require long battery life and arich set of connectivity interfaces.

The data provided in this application note may vary from board to board and from device to device, and de pendson the measurement conditions and type of equipment used. The data is for reference only.

Table 3-4. Power Consumption of External Devices

Consumption in Active Mode

5V (mA)

Consumption in Low-Power Mode

5V (mA)Consumption Optimization Solution

Expected Consumption

5V (mA)

LCD 260 50 Disconnect DM board 0

G-PHY 90 13 Set to power-down mode 13

E-PHY 32 2 Set to power-down mode 2

COM 20 0.6 Disconnect cable 0.6

HDMI 4.7 4.7 Set to power-down mode 0

JTAG 36 36 Disconnect its power supply 0

Audio 0.1 0.1 Keep in power-down mode (after reset) 0.1

Other ICs 15 15 15

Total 457.8 121.4 30.7


26

5. FAQ

1. When the demo board is powered on, why doesn’t the default demo show up?

Please check the following points: Double check all the jumpers to make sure they are set correctly. If not, set them according to Figure 1-2. The demo might not be successfully flashed, or the NAND Flash might be erased. If so, re-flash the default

demo as described in Section 1.2. If an amp meter is inserted for current measurement, the supply voltage might drop due to the impedance of

the amp meter. Check the range selection of the meter.

2. Why does switching the test range of the amp meter cause the reset of the demo board? On some low-end amp meters, the current loop is cut off during range switching.

3. Why are the consumption numbers I get in some cases not exactly the same as those provided in thisapplication note? The numbers provided in this application note are typical/average values. The actual values might vary

slightly due to certain factors such as different ICs, PCB and temperature. The default demo is with a full DTB, in which most peripherals and drivers have been enabled. If you use the

default demo for other different cases (where specific DTBs instead of the full DTB should be used), the power consumption will increase.

4. How can I wake up the system from Standby/Suspend mode when no DM board is connected? A push-button PB3 on the MB can be used to wake up the kit from Standby/Suspend mode. But as the pin

for push-button PB3 is multiplexed as one LCD data line, for the default/LCD/ISI case, the push-button PB3 does not work and you must reset the kit.

5. In the USB host scenario, why is the current through VDDUTMII and VDDOSC abnormal in Low-power mode? In the current release, the USB transceiver and an internal bandgap for UTMI PHY cannot be stopped once

they have been started or initialized.

6. Why is the wake-up time printed on the hyperterminal in this demo longer than that in datasheet? The wake-up time in the datasheet is the time from when the wake-up event occurs to when the core

executes the first instruction. The wake-up time printed on the hyperterminal in this demo is from the wake-up event occurrence to system

recovery. The extra time is used to resume device drivers.


Appendix A. SAMA5D36-CMP Schematics

This section contains the following schematics: Block diagram PIO Muxing & Jumper SAMA5D3x power SAMA5D3x NOR and NAND Flash SAMA5D3x Data Flash, 1-wire, LED 4Gb LPDDR2 Ethernet 200-pin SODIMM


28

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

PIO A,...EPIO A,...EPIO A&D

PIO B&E

PIO C

ATMELARMA5 PROCESSOR ATSAMA5D36-CU

SODIMM

CONNECTOR

PIO

CONNECTOR

PIO

CONNECTOR

PIO

CONNECTOR

EBI4GbLPDDR2SDRAM

2GbNANDFLASH

128Mb NORFLASH

1-WIREEEPROM

SERIALDATAFLASH

TWO LED10/100/1000 FASTETHERNET

USB A,B,C

DIB

5V INPUT

VBAT

ANALOG Reference

ICE

REV DATEMODIF. DES. DATE VER.SCALE 1/1 REV. SHEET

This agreement is our property. Reproduction and publication without our written authorization shall expose offender to legal proceedings.

ABC

210C

XX-XXX-XXJH X.X

BLOCK DIAGRAM

18-Jun-13

SAMA5D36-CMP

JH 27-Sep-1321-Jan-14JH

X.XX.X XX-XXX-XX

XX-XXX-XX



ABC

210C

XX-XXX-XXJH X.X

BLOCK DIAGRAM

18-Jun-13

SAMA5D36-CMP


X.XX.X XX-XXX-XX

XX-XXX-XX



ABC

210C

XX-XXX-XXJH X.X

BLOCK DIAGRAM

18-Jun-13

SAMA5D36-CMP


X.XX.X XX-XXX-XX

XX-XXX-XX

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

SCHEMATICS CONVENTIONSDEFAULT

CLOSE

JUMPER and SOLDERDROP

4

JP6

PAGE REFERENCE FUNCTION

VDDIOM_MPU

DEFAULT NO POPULATE PARTS

TEST POINTPAGE REFERENCE FUNCTION

4

TP25

(1) Resistance Unit: "K" is "Kohm", "R" is "Ohm

(2) "DNP" means the component is not populatedby default

SAMA5D35SAMA5D34CAN0CAN1GMACEMACHSMCI2LCDCUSART0USART1ISITC1

SAMA5D36 config

PE0 ( EBI_A0 )

VDDPLLACLOSE

SAMA5D33

PAGE REFERENCE FUNCTION

4 R130 Option for NRSTO from PMIC

SAMA5D31 SAMA5D36

JP8

4

4

4

4

4

4

4

4

4

4

4

CLOSE VDDIOP1_MPU

VDDIOP0_MPUCLOSEJP9

JP11 CLOSE VDDUTMII

VDDOSCJP12 CLOSE

JP2 CLOSE VDDCORE

JP4

JP15 CLOSE VDDIODDR_MPU_1V2

JP7 CLOSE VDDBU

JP13 CLOSE VDDANA

JP10 CLOSE FUSE_2V5

JP14 OPEN CM-3V3 to MB-3V3

10 R81 Option for PB13 to Sodimm

4

TP23 Output 6 ( LDO) of PMIC

TP24 Output 7 ( LDO) of PMIC

4

TP4

TP10

TP18

4

4

5

WKUP

SHDN

JP174 CLOSE VCC_5V



4 JP20 CLOSE VDDIOP1_GPHY

4 JP21 CLOSE VDDIODDR_1V2

JP22 CLOSE VCC_1V24

4 JP3 CLOSE VDDUTMIC

JP1 CLOSE SPI0_NPCS0 for Dataflash7

JP169 2-1 GPHY 1V2 from VCC_1V2

GPHY 1V2 from PMOS2-3

C190 Option for SHDN pulse edge power on PMIC4

Q4 Option for nPBIN from MB button4

C195 Option for delay NRST_CMP4

R133 Option for nPBSTAT to PD194

4 JP14 Option for VCC_3V3 to MB

5 R54 Option for pull up JTAGSEL

6 R1 Option for pull down WP of NAND flash

8 R82, R83 Option for terminal DDR_CLK

NRST_CMP

TP6 DDR_VREF8



ABC

310C

XX-XXX-XXJH X.X

PIO Muxing & Jumper

18-Jun-13

SAMA5D36-CMP

27-Sep-13JHJH

X.XX.X

XX-XXX-XXXX-XXX-XX21-Jan-14



ABC

310C

XX-XXX-XXJH X.X

PIO Muxing & Jumper

18-Jun-13

SAMA5D36-CMP

27-Sep-13JHJH

X.XX.X




ABC

310C

XX-XXX-XXJH X.X

PIO Muxing & Jumper

18-Jun-13

SAMA5D36-CMP

27-Sep-13JHJH

X.XX.X


5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

Enable or Disable DCDCFrom MB push button, connect some device's reset input on MB

Use when need feeding MB 3V3

(TWD1)(TWCK1) (3V3)

(2V5)

(1V8)

From PMIC

Wake up and Force power on buttonon MB; the pull-up resistor on MB should DNP

Filter for VDDREF

Discharge current on LPDDR2-VDD1

Auto power on option

VDDREF

VDDREF

WKUP

NRST_CMP

SHDN

PWRHLD

NRSTO

PWRHLD

NRSTO

VCC_1V2

VCC_3V3

VCC_1V8

VCC_3V3

VDDIODDR_1V2

VCC_5V_SOD

VDDBU_SOD

VDDBU_SODVDDBU

VDDIOP0_MPU

VDDIOP1_MPU

VCC_3V3

VDDOSC

VDDIOM_MPU

VDDIOP0

VDDIOP1

VDDIOM

VDDUTMII

VDDIODDR_MPU_1V2

VCC_3V3_SODVCC_3V3

VCC_3V3

VCC_1V2VDDCORE

VDDPLLA

VDDUTMIC

VDDIOP1 VDDIOP1_GPHYFUSE_2V5

VDDANA

VCC_3V3

VDDIOM VDDIOM_NOR

VDDIOM VDDIOM_NAND

SHDN

PC27PC26

WKUP

NRST_SOD

NRST_CMP

WKUP_SOD

PC31

PD19



ABC

410C

XX-XXX-XXJH X.X

POWER

18-Jun-13

SAMA5D36-CMP

JH 27-Sep-1321-Jan-14JH X.X

X.XXX-XXX-XXXX-XXX-XX



ABC

410C

XX-XXX-XXJH X.X

POWER

18-Jun-13

SAMA5D36-CMP





ABC

410C

XX-XXX-XXJH X.X

POWER

18-Jun-13

SAMA5D36-CMP



Q4Si1563EDHDNP

1 32

456

R120 0R

L12180ohm at 100MHz

12JP8

12

R10951K

C17410uF

L18 2.2uH

R123 100K

C17810uF

C195100nFDNP

JP412

R134100K

C24.7uF

TP10SMD

C1874.7uF

C19710nF

C3100nF

C189100nF

MN16 ACT8865

VP131

VP226

VP316

VDDREF23

VSEL20

NC118

PWREN17

nPBSTAT13

nIRQ12

nRSTO11

PWRHLD10

SCL21

SDA22

REFBP32

nPBIN9

INL455

INL676

SW130

OUT11

SW227

OUT224

SW315

OUT319

OUT43

OUT54

OUT67

OUT78

GA

2

GP

129

GP

228

GP

314

EP

33

NC225

JP1112

C191100nF

R98 1R

R133 0RDNP

C1702.2uF

JP1212

C1854.7uF

JP612

C17510uF

R115 0R

C1941uF

C196100nF

R130 0RDNP

L11180ohm at 100MHz

12

R211R

R117 0R

R103 0R

JP1312

C18110uF

C17910uF

R106 0R

C1734.7uF

C1004.7uF

JP1912

C183100nF

R119 0R

R99 0R

R100 0R

R1131.5K

L17 2.2uH

JP1512

C18447nF

L20120@100MHz,2A

1 2

JP1812

C19810nF

R10210K

JP312

L1180ohm at 100MHz

12

R131 0R

R171R

C180100nF

TP18SMD

R124 0R

TP23 SMD

JP14DNP

12

L16 2.2uH

C1924.7uF

L210uH/150mA

C1884.7uF

R107 0R

C1692.2uF

C1864.7uF

R116 0R

L1910uH/150mA

R129 330R

JP2012

C190100nF

DNP

R13251K

R125 0R

JP1712

JP912

R1111R

L1010uH/150mA

TP4SMD

JP2212

JP2112

R110 1K

R114100K

JP1012

R10110K

JP212

R105 0R

C1714.7uF

JP712

C18210uF

Q2BSN20

1

3

2

R108 0R

C1724.7uF

C90100nF

TP24 SMD

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

ADVREF

VDDIOP1_MPU

VDDIOP0VDDBU_SOD

VDDBU_SOD

VDDIOP0

VDDBU

VDDIOM_MPU

VDDIOP0_MPU

FUSE_2V5

GNDUTMI

GNDUTMI

GNDUTMI

VDDCORE

VDDOSC VDDUTMII

VDDPLLA

VDDANA

VDDUTMIC

VDDIODDR_MPU_1V2

HHSDMBHHSDPB

HHSDMCHHSDPC

DIBPDIBN

HHSDMAHHSDPA

TMSTCKTDO

NRST_CMP

JTAGSELTDI

NTRST

BMS

WKUPSHDN



ABC

510C

XX-XXX-XXJH X.X

SAMA5D36-I&POWER

18-Jun-13

SAMA5D36-CMP


X.X XX-XXX-XXXX-XXX-XX



ABC

510C

XX-XXX-XXJH X.X

SAMA5D36-I&POWER

18-Jun-13

SAMA5D36-CMP





ABC

510C

XX-XXX-XXJH X.X

SAMA5D36-I&POWER

18-Jun-13

SAMA5D36-CMP



SUP1

CA89405MFDNP

C128100nF

C80100nF

C8 20pF

C60100nF

C82100nF

Y212MHz

123 4

C46100nF

C63100nF

C4100nF

R15 10K

C48100nF

MN4HATSAMA5D36-CU

GN

DC

OR

E_1

A16

VD

DC

OR

E_1

C5

VD

DC

OR

E_2

C7

GN

DC

OR

E_2

C9

VDDIODDR_1D13

VD

DC

OR

E_3

D14

GN

DIO

DD

R_1

E14

GN

DIO

DD

R_2

F10

GN

DIO

DD

R_3

F13

VDDIODDR_2F14

GN

DIO

DD

R_4

F15

VD

DIO

P0_

1G

7

VDDIODDR_3G10

VDDIODDR_4G13

VDDIODDR_5H11

GN

DIO

DD

R_5

H14

GN

DIO

P_1

J7

GN

DIO

M_1

J11

GN

DA

NA

L4

ADVREFL5

VDDANAL6

VD

DIO

P1_

1L1

1

VD

DIO

P1_

2M

4

TDOM11

TMSN10

GN

DIO

P_2

N11

GN

DC

OR

E_3

N13

GN

DFU

SE

P4

TCKP9

GN

DP

LLP

10

NTRSTP11

GN

DU

TMI_

1R

12

VDDFUSER3

TDIR8

VDDPLLAR10

VBGR11

VDDIOM_1P12

VD

DC

OR

E_4

T7

GN

DC

OR

E_4

T8

JTAGSELT9

WKUPT10

GN

DO

SC

T11

SHDNT12

GN

DB

UT1

3

GN

DC

OR

E_5

T14

VD

DC

OR

E_5

T15

VDDIOM_2T16

GN

DIO

M_2

T17

GN

DIO

P_3

U7

XINU8

BMSU9

VDDOSCU11

VDDUTMIIU13

TSTU15

XIN32U16

VD

DC

OR

E_6

U17

VD

DC

OR

E_7

V7

XOUTV8

NRSTV9

VD

DIO

P0_

2V

11

VDDUTMICV13

VD

DB

UV

15

XOUT32V16

GN

DC

OR

E_6

V17

GN

DIO

P_4

E5

HHSDMAV10

HHSDPAU10

HHSDMCV14

HHSDPCU14

HHSDPBU12 HHSDMBV12

DIBNU6

DIBPV6

C106100nF

C79100nF

C97100nF

R53 100K

RR

4D10

0K4

5

C72100nF

C73100nF

C11 20pF

C66100nF

C85100nF

Y1 32.768 kHz

12

C5100nF

C74100nF

RR

4C10

0K3

6

C10 20pF

C17100nF

C6210pF

RR

4B10

0K2

7

C81100nF

C1014.7uF

C86100nF

R55 100K

R54100KDNP

C6 20pF

C71100nF

R525.62K 1%

C51100nF

C75100nF

C52100nF

C54100nF

RR

4A10

0K1

8

C61100nF

R510R

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

M_EBI_A0

DDR_A7

DDR_A12

FLASH_A2

FLASH_A7FLASH_A8

FLASH_A15

DDR_A1DDR_A2DDR_A3DDR_A4DDR_A5DDR_A6

DDR_A8DDR_A9DDR_A10DDR_A11

DDR_A13

DDR_D12DDR_D13

DDR_D0DDR_D1DDR_D2DDR_D3DDR_D4DDR_D5DDR_D6DDR_D7DDR_D8DDR_D9DDR_D10DDR_D11

DDR_D26DDR_D27

DDR_D14DDR_D15DDR_D16DDR_D17DDR_D18DDR_D19DDR_D20DDR_D21DDR_D22DDR_D23DDR_D24DDR_D25

DDR_D30DDR_D31

DDR_D28DDR_D29

FLASH_A12FLASH_A13

FLASH_A3FLASH_A4FLASH_A5FLASH_A6

FLASH_A9FLASH_A10FLASH_A11

FLASH_A14

M_EBI_D12M_EBI_D13

M_EBI_D8M_EBI_D9M_EBI_D10M_EBI_D11

M_EBI_D14M_EBI_D15

FLASH_A16FLASH_A17FLASH_A18FLASH_A19FLASH_A20FLASH_A21FLASH_A22FLASH_A23

NRDNWENANDCE

M_EBI_D2

M_EBI_D4M_EBI_D3

M_EBI_D6M_EBI_D7

M_EBI_D5

M_EBI_D0M_EBI_D1

NANDCLENANDALE

NANDRDY

M_EBI_D4

M_EBI_D2

M_EBI_D10

M_EBI_D5

M_EBI_D12

M_EBI_D9

M_EBI_D14M_EBI_D15

M_EBI_D3

M_EBI_D0

M_EBI_D6M_EBI_D7M_EBI_D8

M_EBI_D1

M_EBI_D13

M_EBI_D11

FLASH_A1FLASH_A2FLASH_A3FLASH_A4FLASH_A5FLASH_A6FLASH_A7FLASH_A8FLASH_A9FLASH_A10FLASH_A11FLASH_A12

FLASH_A15FLASH_A14FLASH_A13

FLASH_A16

FLASH_A18FLASH_A17

FLASH_A19FLASH_A20FLASH_A21FLASH_A22

NRDNWE

NCS0

FLASH_A23

PE24PE25

PE27PE28PE29PE30PE31

PE26

PE23

M_EBI_A23M_EBI_A22M_EBI_A21

NCS0

NANDCLENANDALE

NCS3

NRDNWE

NANDRDY

NCS3

FLASH_A1DDR_A0

M_EBI_D0M_EBI_D1M_EBI_D2M_EBI_D3M_EBI_D4M_EBI_D5M_EBI_D6M_EBI_D7

VDDIOM_NAND

VDDIOM_NAND

VDDIOM_NAND

VDDIOM_NOR

VDDIODDR_1V2

VDDIOM_NOR

VDDIOM_NAND

VDDIOM_NOR

VDDIOM_NAND

DDR_D[0..31]

NRST_CMP

DDR_VREF

PE[23..31]

OE_Nandflash

DDR_A[0..13]

DDR_DQS1

DDR_DQS2

DDR_DQS3

DDR_WEDDR_CS

DDR_BA0

DDR_DQM0

DDR_BA1DDR_BA2

DDR_DQM1DDR_DQM2

DDR_RASDDR_CAS

DDR_DQM3

DDR_DQS0

DDR_CKEDDR_CLKDDR_CLKN

DDR_DQSN0

DDR_DQSN1

DDR_DQSN2

DDR_DQSN3



ABC

610C

XX-XXX-XXJH X.X

SAMA5D36-II&NOR&NAND

18-Jun-13

SAMA5D36-CMP





ABC

610C

XX-XXX-XXJH X.X


18-Jun-13

SAMA5D36-CMP





ABC

610C

XX-XXX-XXJH X.X


18-Jun-13

SAMA5D36-CMP



R12 27R

MN1NL17SZ126

OE1

VCC5

GND3 OUT

4IN2

MN4EATSAMA5D36-CU

PE0_A0/NBS0P13

PE1_A1R14

PE2_A2R13

PE3_A3V18

PE4_A4P14

PE5_A5U18

PE6_A6T18

PE7_A7R15

PE8_A8P17

PE9_A9P15

PE10_A10P18

PE11_A11R16

PE12_A12N16

PE13_A13R17

PE14_A14N17

PE15_A15_SCK3R18

PE16_A16_CTS3N18

PE17_A17_RTS3P16

PE18_A18_RXD3M18

PE19_A19_TXD3N15

PE20_A20_SCK2M15

PE21_A21/NANDALEN14

PE22_A22/NANDCLEM17

PE23_A23_CTS2M13

PE24_A24_RTS2M16

PE25_A25_RXD2N12

PE26_NCS0_TXD2M14

PE27_NCS1_TIOA2M12

PE28_NCS2_TIOB2L13

PE29_NWR1/NBS1_TCLK2L15

PE30_NWAITL14

PE31_IRQ_PWML1L16

R8 27R

R6 0R

C1100nF

C34100nF

R40 0R

C9 100nF

R3810K

MN4GATSAMA5D36-CU

D14H16

D16H18

D6J12

D8J14

D9J16

D11J17

D13J18

NWE_NWR0K11

D0K12

D4K13

D2K14D1K15

D3K16

D5K17

D7K18

NCS3L12

NRDL17

NANDRDYL18

D10J13

D12J15

R10 0R

R37 470K

C33100nF

R41 0R

R18240R 1%

R5 10K

R43 240R 1%

R7 0R

MN3MT29F2G08ABAEAWP

WE18

N.C66

VCC37

CE9

RE8

N.C1120

WP19

N.C55

N.C11

N.C22

N.C33

N.C44

DNU121

DNU222

N.C1223

N.C1324

R/B7

I/O8_N.C26

I/O9_N.C27

I/O10_N.C28

I/O029

VCC_N.C34

N.C1435

VSS36

DNU338

VCC_N.C39

VCC12

VSS13

ALE17

N.C811 N.C710

N.C914

N.C1015

CLE16

VSS_N.C25

I/O11_N.C33

I/O130

I/O332I/O231

I/O15_N.C47I/O14_N.C46I/O13_N.C45

I/O744I/O643I/O542I/O441

I/O12_N.C40

VSS_N.C48

R59 100K

R4 0R

R9 27R

TP25SMD

R110KDNP

R36 100K

R2 100K

R11 0R

C12100nF

R39 100K

R35 0R

MN4FATSAMA5D36-CU

DDR_CASA5

DDR_A13A6

DDR_A11A7

DDR_A7A8

DDR_A2A9

DDR_D30A10

DDR_D27A11

DDR_CLKNA12

DDR_DQSN3A13

DDR_D25A14DDR_D24A15

DDR_DQSN2A17

DDR_D19A18

DDR_WEB5

DDR_BA1B6

DDR_CKEB7

DDR_A9B8

DDR_A4B9

DDR_A0B10

DDR_D28B11

DDR_CLKB12

DDR_DQS3B13

DDR_D23B14

DDR_DQM2B15

DDR_D16B16

DDR_DQS2B17

DDR_D17B18

DDR_CSC8

DDR_A8C10

DDR_A1C11

DDR_CALNC12

DDR_VREFC13

DDR_BA0E9

DDR_DQSN0D18

DDR_D12D17

DDR_D14D16

DDR_D22D15

DDR_DQM3D12

DDR_A3D11

DDR_A6D10

DDR_A12D9

DDR_D13C18

DDR_D15C17

DDR_D20C16

DDR_D18C15

DDR_D21C14

DDR_A5E10

DDR_D31E11

DDR_D26E12

DDR_CALPE13

DDR_BA2F9

DDR_A10F11

DDR_D29F12

DDR_D8F16

DDR_D6F17

DDR_DQSN1F18

DDR_RASG11

DDR_DQM0G12

DDR_D10G14

DDR_D7G15

DDR_D4G16DDR_D3G17

DDR_DQS1G18

DDR_D0H12

DDR_D2H13

DDR_D5H15

DDR_D1H17

DDR_DQM1E15

DDR_D11E16

DDR_D9E17

DDR_DQS0E18

MN10JS28F128P33TF70A

A129

A225

A324

A423

A522

A621

A720

A819

A98

A107

A116

A125

A134

A143

A152

A161

A1755

A1818

A1917

A2016

DQ034

DQ136

DQ239

DQ341

DQ447

DQ549

DQ651

DQ753

DQ835

DQ937

DQ1040

DQ1142

DQ1248

DQ1350

DQ1452

DQ1554

VCC33

VCCQ38

VPP43

VSS28

VSS31

VSS12

A2111

NC13

CE#30

OE#32

WE#14

RST#44

WP#15

CLK45

WAIT56

A2210

A239

RFU227RFU126

ADV#46

R3 0R

C32100nF

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

1-WIRE EEPROM

LED

(SPI0_MIS0)(SPI0_MOSI)

SERIAL DATAFLASH

(SPI0_SPCK)

(SP

I0_N

PC

S0)

PA0PA1PA2PA3PA4PA5PA6PA7PA8PA9PA10PA11

PA15PA14PA13PA12

PA16PA17PA18PA19

PA23PA22PA21PA20

PA25PA24

PA28PA29PA30PA31

PA27PA26

PC3PC2PC1PC0

PC13PC12

PC8PC9

PC4PC5PC6PC7

PC28

PC16PC17PC18

PC10PC11

PC15PC14

PC26

PC19

PC23PC22PC21PC20

PC25PC24

PC29PC30PC31

PC27

PD3PD2PD1PD0

PD13PD12

PD8PD9

PD4PD5PD6PD7

PD28

PD16PD17PD18

PD10PD11

PD15PD14

PD26

PD19

PD23PD22PD21PD20

PD25PD24

PD29PD30PD31

PD27

PB3PB2PB1PB0

PB13PB12

PB8PB9

PB4PB5PB6PB7

PB28

PB16PB17PB18

PB10PB11

PB15PB14

PB26

PB19

PB23PB22PB21PB20

PB25PB24

PB29PB30PB31

PB27

PE25

PE24

PD11

PD12PD10

PE25

PD13

OE_Dataflash

VDDIOM

VDDIOP1

VDDIOP1

VDDIOP1

VDDIOP1

VCC_3V3

PA[0..31] PC[0..31]

PD[0..31]PB[0..31]

PE[23..31]

OE_Nandflash

BOOT_CS_OFF



ABC

710C

XX-XXX-XXJH X.X

SAMA5D36-III&DATA&1-WIRE,LED

18-Jun-13

SAMA5D36-CMP

27-Sep-13JH21-Jan-14JH

X.XX.X XX-XXX-XX

XX-XXX-XX



ABC

710C

XX-XXX-XXJH X.X


18-Jun-13

SAMA5D36-CMP


X.XX.X XX-XXX-XX

XX-XXX-XX



ABC

710C

XX-XXX-XXJH X.X


18-Jun-13

SAMA5D36-CMP


X.XX.X XX-XXX-XX

XX-XXX-XX

R48100K

R76 0R

R42470R

R44470R

Q1IRLML2502

1

32

R77 0R

R79 0R

MN4DATSAMA5D36-CU

PD0K5

PD1P1

PD2K6

PD3R1

PD4L7

PD5P2

PD6L8

PD7R2

PD8K7

PD9U2

PD10K9

PD11M5

PD12K10

PD13N4

PD14L9

PD15N3

PD16L10

PD17N5

PD18M6

PD19T1

PD20N2

PD21M3

PD22M2

PD23L3

PD24M1

PD25N1

PD26L1

PD27L2

PD28K1

PD29K2

PD30J1

PD31J2

R72 0R

MN4BATSAMA5D36-CU

PB0_GTX0T2

PB1_GTX1N7

PB2_GTX2T3

PB3_GTX3N6

PB4_GRX0P5

PB5_GRX1T4

PB6_GRX2R4

PB7_GRX3U1

PB8_GTXCKR5

PB9_GTXENP3

PB10_GTXERR6

PB11_GRXCKV3

PB12_GRXDVP6

PB13_GRXERV1

PB14_GCRSR7

PB15_GCOLU3

PB16_GMDCP7

PB17_GMDIOV2

PB18_G125CKV5

PB19_GTX4T6

PB20_GTX5N8

PB21_GTX6U4

PB22_GTX7M7

PB23_GRX4U5

PB24_GRX5M8

PB25_GRX6T5

PB26_GRX7N9

PB27V4

PB28M9

PB29P8

PB30M10

PB31R9

D3BAT54C

321

MN14DS2431P+

IO2

GN

D1

NC13

NC24

NC35

NC46

R701.5K

C123100nF

D2 red

R7810K

MN13AT25DF321A

HOLD7

GND4

VCC8

CS1

SCK6

SI5

SO2

WP3

MN4CATSAMA5D36-CU

PC0_ETX0D8

PC1_ETX1A4

PC2_ERX0E8

PC3_ERX1A3

PC4_ETXENA2

PC5_ECRSDVF8

PC6_ERXERB3

PC7_EREFCKG8

PC8_EMDCB4

PC9_EMDIOF7

PC10A1

PC11D7

PC12C6

PC13E7

PC14B2

PC15F6

PC16B1

PC17E6

PC18C3

PC19D6

PC20C4

PC21D5

PC22C2

PC23G9

PC24C1

PC25H10

PC26H9

PC27D4

PC28H8

PC29G5

PC30D3

PC31E4

MN4AATSAMA5D36-CU

PA0_LCDDAT0E3

PA1_LCDDAT1F5

PA2_LCDDAT2D2

PA3_LCDDAT3F4

PA4_LCDDAT4D1

PA5_LCDDAT5J10

PA6_LCDDAT6G4

PA7_LCDDAT7J9

PA8_LCDDAT8F3

PA9_LCDDAT9J8

PA10_LCDDAT10E2

PA11_LCDDAT11K8

PA12_LCDDAT12F2

PA13_LCDDAT13G6

PA14_LCDDAT14E1

PA15_LCDDAT15H5

PA16_LCDDAT16H3

PA17_LCDDAT17H6

PA18_LCDDAT18H4

PA19_LCDDAT19H7

PA20_LCDDAT20H2

PA21_LCDDAT21J6

PA22_LCDDAT22G2

PA23_LCDDAT23J5

PA24_LCDPWMF1

PA25_LCDDISPJ4

PA26_LCDVSYNCG3

PA27_LCDHSYNCJ3

PA28_LCDPCKG1

PA29_LCDDENK4

PA30_TWD0H1

PA31_TWCK0K3

R71470K

JP1

12

R1260R

C114100nF

MN12NL17SZ126

OE1

VCC5

GND3 OUT

4IN2

D1 Blue

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

LPDDR2 SDRAM

DDR_DQS1DDR_DQSN1

DDR_DQS0DDR_DQSN0

DDR_DQM1DDR_DQM0

DDR_CLKN

DDR_CKE

DDR_CLK

DDR_D2

DDR_D15DDR_D14

DDR_D12DDR_D11DDR_D10DDR_D9

DDR_D1DDR_D0

DDR_D7DDR_D6DDR_D5DDR_D4

DDR_D13

DDR_D3

DDR_D8

DDR_CS

DDR_CLKN

DDR_CLK

DDR_RASDDR_CASDDR_WE

DDR_A5DDR_A6

DDR_A1DDR_A2DDR_A3

DDR_A0

DDR_A4

DDR_DQM2DDR_DQM3

DDR_DQSN3

DDR_DQS2DDR_DQSN2

DDR_DQS3

DDR_D16DDR_D17DDR_D18DDR_D19DDR_D20DDR_D21DDR_D22DDR_D23DDR_D24DDR_D25DDR_D26DDR_D27DDR_D28DDR_D29DDR_D30DDR_D31

VDDIODDR_1V2 1V2_VDD2

1V2_VDDCA

1V2_VDDQ

VREFCA

VREFDQ

1V2_VDD2

1V8_VDD1

1V2_VDDCA

1V2_VDDQ

VREFCA

1V2_VDDQ

1V2_VDDCA

VREFDQ

1V8_VDD1VCC_1V8

DDR_A[0..13]

DDR_D[0..31]

DDR_CLK

DDR_CKE

DDR_CS

DDR_CLKN

DDR_CASDDR_RAS

DDR_WE

DDR_DQS1

DDR_DQS0

DDR_DQM1DDR_DQM0

DDR_DQS3

DDR_DQS2

DDR_DQM2DDR_DQM3

DDR_VREF

DDR_DQSN1

DDR_DQSN0

DDR_DQSN3

DDR_DQSN2



ABC

810C

XX-XXX-XXJH X.X

4Gb LPDDR2

18-Jun-13

SAMA5D36-CMP





ABC

810C

XX-XXX-XXJH X.X

4Gb LPDDR2

18-Jun-13

SAMA5D36-CMP





ABC

810C

XX-XXX-XXJH X.X

4Gb LPDDR2

18-Jun-13

SAMA5D36-CMP



C161100nF

U1B

MT42L128M32D1GU-25 WT

VDD1B6

VDD1C1

VDD1R1

VDD1T6

VDD2B5

VDD2D2

VDD2G1

VDD2J7

VDD2P2

VDD2T5

VDDCAF1

VDDCAH1

VDDCAN2

VDDQC7

VDDQC10

VDDQD5

VDDQE9

VDDQF10

VDDQH6

VDDQJ6

VDDQK6

VDDQM10

VDDQN9

VDDQP5

VDDQR7

VREFCAG3

VREFDQJ9

VSSC2

VSSC5

VSSD1

VSSH2

VSSP1

VSSR2

VSSR5

VSSJ8

VSSCAE1

VSSCAJ1

VSSQC6

VSSQC9

VSSQD10

VSSQR6

VSSQE10

VSSQF5

VSSQG10

VSSQJ5

VSSQL10

VSSQM5

VSSQN10

VSSQP10

DNU1A1

DNU2A2

DNU3A9

DNU4A10

DNU5B1

DNU6B10

DNU7T1

DNU8T10

DNU9U1

DNU10U2

DNU11U9

DNU12U10

NC1B2

NC2B3

NC3J2

NC4R3

NC5T2

VDDQR10

NC6T3

VSSQR9

VSSCAN1

R911.5K 1%

C158100nF

L1410uH/150mA

C162100nF

C137100nF

R92 0R

C148100nF

U1A

MT42L128M32D1GU-25 WT

CA0P3

CA1N3

CA2M3

CA3M2

CA4M1

CA5G2

CA6F2

CA7F3

CA8E3

CA9E2

ZQ1C3

CKE0K1

CKE1K2

CKJ3

CK#H3

CS0#L1

CS1#L2

DQS0L6

DQS0#L5

DQS1G6

DQS1#G5

DQS2P8

DQS2#P9

DQS3D8

DQS3#D9

DM0K5

DM1H5

DM2N7

DM3E7

DQ0N8

DQ1M8

DQ2M7

DQ3M9

DQ4M6

DQ5L7

DQ6L8

DQ7L9

DQ8G9

DQ9G8

DQ10G7

DQ11F6

DQ12F9

DQ13F7

DQ14F8

DQ15E8

DQ16T7

DQ17P6

DQ18T8

DQ19N5

DQ20P7

DQ21T9

DQ22R8

DQ23N6

DQ24E6

DQ25C8

DQ26B9

DQ27D7

DQ28E5

DQ29B8

DQ30D6

DQ31B7

ZQ0D3

RFU1K3

RFU2L3

C144100nF

C141100nF

C149100nF

C138100nF

C155100nFC156100nF

R112 0R

C142100nF

C140100nF

C139100nF

R83DNP

51R

C151100nF

C157100nF

C163100nF

C143100nF

C153100nF

R951.5K 1%

R89 0R

L1510uH/150mA

R931.5K 1%

R941R

TP6SMD

C133100nF

R96 0R

C166100nF

C145100nF

C1654.7uF

C136100nF

C167100nF

R87 0R

C159100nF

R121 0R

C135100nF

C129 100nF

C134100nF

C164100nF

R82DNP

51R

C152100nF

R971.5K 1%

R122 0R

C1474.7uF

C154100nF

R88 0R

C146100nF

C160100nF

R901R

R86 240R 1%

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

G125CK

GTX0GTX1GTX2GTX3

GRX0GRX1

GRX2GRX3

GTXCK

GTX_CTL

GRXCK

GRX_CTL

GMDC

GMDIOINT_GETHR

PCB heat sink1x1 inch copper ground

from PMIC

PB4PB5

PB6PB7

PB3PB2PB1PB0

PB16PB11

PB13

PB9

PB8

PB25PB17

PB18

XI

XO

XI

XOLDO_O

LDO

_O

DVDDL

AVDDL

AVDDH

AVDDL_PLL

AVDDL_PMOS AVDDL_PLL

AVDDL

DVDDL

AVDDL_PMOS

AVDDH VCC_1V2

VDDIOP1_GPHY

VDDIOP1_GPHY

VDDIOP1_GPHY

VDDIOP1_GPHY

VDDIOP1_GPHY

LED1LED2

PB[0..31]

NRST_CMP

ETH0_TX1+ETH0_TX1-

ETH0_RX1+ETH0_RX1-ETH0_TX2+ETH0_TX2-

ETH0_RX2+ETH0_RX2-



ABC

910C

XX-XXX-XXJH X.X

ETHERNET

18-Jun-13

SAMA5D36-CMP


X.XX.X

XX-XXX-XXXX-XXX-XX



ABC

910C

XX-XXX-XXJH X.X

ETHERNET

18-Jun-13

SAMA5D36-CMP


X.XX.X

XX-XXX-XXXX-XXX-XX



ABC

910C

XX-XXX-XXJH X.X

ETHERNET

18-Jun-13

SAMA5D36-CMP


X.XX.X

XX-XXX-XXXX-XXX-XX

R344.7K

C12010nF

R19 27R

+ C12110uF

+ C12610uF

Q3FDT434P

1

G

2D3S

4D_T

RR3B 27R2 7

C11910nF

C11110nF

L8180ohm at 100MHz

1 2

R20 27R

JP16

1

2

3

RR3A 27R1 8

+ C12410uF

C21 20pF

R65 27R

R26 27R

RR2D 27R4 5

C9910nF

RR2C 27R3 6

R24 27R

C10510nF

R63

4.7K

RR2B 27R2 7

L9180ohm at 100MHz

1 2

Y325MHz

123 4

R69 4.7K

L13180ohm at 100MHz

1 2

RR2A 27R1 8

RR1D 27R4 5RR1C 27R3 6

R58

4.7K

+ C2047uF

L7180ohm at 100MHz

1 2

R68 1K

+ C9610uF

C2222uF

C19322uF

R61

4.7K

R64

4.7K

C10910nF

C10810nF

C11210nF

C11510nF

C10310nF

R23 27RR22 27R

+ C12510uF

C12210nF

C11610nF

C9810nF

C11810nF

C18 20pF

R62 27R

C10210nF

R60 27R

KSZ9031RNI48-pin QFN

MN6KSZ9031RNX

NC

113

LED

215

DV

DD

H16

LED

117

DV

DD

L14

TXD

019

TXD

120

TXD

221

TXD

322

DV

DD

L18

DV

DD

L23

GTX

_CLK

24

TX_EN25DVDDL26RXD327

VSS29DVDDL30RXD131RXD032RX_DV33DVDDH34RX_CLK35MDC36

MD

IO37

INT_

N38

DV

DD

L39

DV

DD

H40

CLK

125_

ND

O41

RE

SE

T_N

42LD

O_O

43X

O45

XI

46N

C2

47IS

ET

48

AVDDH1

TXRXP_A2

TXRXM_A3

TXRXP_B5

TXRXM_B6

TXRXP_C7

TXRXM_C8

TXRXP_D10

TXRXM_D11

AVDDH12

RXD228

AV

DD

L_P

LL44

P_G

ND

49

AVDDL4

AVDDL9

R75 12.1K 1%

C10410nF

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

PA0PA1

PA3PA2

PA5

PA7PA6

PA4

PA9

PA11PA10

PA13

PA15PA14

PA12

PA8

PA17

PA19PA18

PA21

PA23PA22

PA20

PA25

PA27PA26

PA29

PA31PA30

PA28

PA24

PA16

PB13PB14PB15

PB21PB22

PB20PB19

PB24

PB30

PB28

PB25PB26

PB23

PB27

PB29

PB31

PB10

PC1PC2PC3

PC6PC7

PC5PC4

PC9

PC15

PC13PC12

PC10PC11

PC8

PC14

PC21

PC18PC19

PC17

PC25

PC20

PC22PC23

PC31

PC29

PC26PC27

PC16

PC24

PC28

PC30

PC0

PE23PE24PE25PE26

PC25PC23PC21

PC18PC16PC8PC6PC4PC2PC0

PE27PC10

PC12PC14PC27PC29PC31

VDDIOP0_SODPA0PA2

PA5PA7PA9PA11PA12PA14PA16PA18

PA21PA23PA25PA27PA28PA30

PD30

PD28PD26PD24PD22PD20PD18PD16PD14

PD12PD10PD8PD6PD5PD3PD1

VDDIOP1_SOD

PB10PB14PB19PB21PB23PB24

PA13PA15PA17PA19PA20PA22PA24PA26

PC30VDDIOP0_SOD

PA1PA3PA4PA6PA8PA10

PA29PA31

PD31PD29PD27PD25PD23

PD21PD19PD17PD15PD13PD11PD9PD7

PD4PD2PD0

VDDIOP1_SOD

PB13PB15PB20PB22

PB31

PB25PB27PB29

PB26PB28

PE28PC11PC13PC15PC26PC28

PC5PC3PC1

PC24PC22PC20PC19PC17PC9PC7

PE29PE30PE31

PD13PD12

PD8PD9

PD4PD5PD6PD7

PD28

PD16PD17PD18

PD10PD11

PD15PD14

PD26

PD19

PD23PD22PD21PD20

PD25PD24

PD29PD30PD31

PD27

PD3PD2PD1PD0

PE31

PE27PE28PE29PE30

PE26PE25PE24PE23

PB30

PB12

VCC_5V_SOD

VDDBU_SOD

VCC_5V_SOD

VCC_3V3_SODVCC_3V3_SOD

VDDIOMVDDIOM

ADVREF

VDDANA

VDDANA

VDDIOP0

VDDIOP1

PA[0..31]

PB[0..31]

PC[0..31]

PWR_EN

PD[0..31]

PE[23..31]

BOOT_CS_OFF

HHSDMAHHSDPA

HHSDMBHHSDPB

HHSDMCHHSDPC

LED1LED2

ETH0_RX1+ETH0_RX1-

ETH0_RX2+ETH0_RX2-

NRST_SOD

JTAGSELWKUP_SOD

BMS

NTRSTTDITCKTMS

SHDN

TDO

DIBPDIBN

ETH0_TX1+ETH0_TX1-

ETH0_TX2-ETH0_TX2+



ABC

1010C

XX-XXX-XXJH X.X

200-PIN SODIMM

18-Jun-13

SAMA5D36-CMP

27-Sep-13JHJH 21-Jan-14 X.X




ABC

1010C

XX-XXX-XXJH X.X

200-PIN SODIMM

18-Jun-13

SAMA5D36-CMP





ABC

1010C

XX-XXX-XXJH X.X

200-PIN SODIMM

18-Jun-13

SAMA5D36-CMP



KEY

J1

SODIMM_2

PC1152

PC433 PC631

PC2759 PC1457

VCC_3V3_141

PC1354

PE2850

PE2749 NC147 Enable_245

PC1051

Enable_140PC138

GND15 VCC_5V_33 VCC_5V_11

VCC_5V_22

VCC_5V_44

VBAT6

Enable_039

VCC_3V3_343

VCC_3V3_444

Enable_346

ADVREF48

VCC_3V3_242

GND553

PC1255

PC1556

PC2658

PC2860

GND432

PE2511

PE237

PE249

PC829

VDDIOM_115 PE2613

PC2517

PC2319

PC2121

GND323

PC1825

PC1627

PA2494

PC3163

VDDIOP0_165

PA067

PA269

GND771

PA674

PA775

PA977

PA1179

PA1281

PA1483

PA1685

GND989

PA2191

PA2393

PA2595

PA2797

PA31102

VDDANA_2104

PD30105

PD28109

PD26111

PD24113

PD22115

PD20117

PD16121

PD14123

GND13125

PD10129

PD8131

PD6133

PD3137

PD1139

VDDIOP1_1141

GND15143

PB10145

PB19149

PB21151

PB23153

PB24155

GND17157

USBA_DP159

GND18163

USBB_DP165

GND19169

USBC_DP171

USBC_DM173

GND_ETH1175

ETH0_TX1+177

ETH0_TX1-179

ETH0_RX1+181

GND_ETH2185 ETH0_RX1-183

ETH0_TX2+187

ETH0_TX2-189

PC730

PE298

PE3010

PE3112

GND214

VDDIOM_216

PC2418

PC2220

PC2022

PC1924

PC1726

PC928

PC534

PC3064

VDDIOP0_266

PA168

PA370

PA472

PA876

PA1078

GND880

PA1382

PA1584

PA1786

PA2090

PA2292

PA2696

GND1098

PA29100

PA30101

VDDANA_1103

PD31106

PD29108

PD27110

PD25112

GND12116

PD21118

PD19120

PD17122

PD15124

PD9130

PD7132

GND14134

PD4136

PD2138

PD0140

PB13144

PB12146

PB15148

PB20150

PB22152

PB25156

PB27158

PB29160

PB31162

PB30164

GND20170

DIBP172

DIBN174

GND22176

JTAGSEL178

WKUP180

SHDN182

BMS184

nRST186

nTRST188

PC235

PC336

PC037

PC2961

GND662

PA573

PA1887

PA1988

PA2899

GND11107

PD18119

PD23114

PD13126

PD5135

VDDIOP1_2142

PB14147

GND16154

USBA_DM161

ETH0_RX2+191

PD12127

PD11128

USBB_DM167

PB28168PB26166

TDI190

ETH0_RX2-193

GND23195

LED2197

LED1199

TCK192

TMS194

TDO196

RTCK198

GND24200

C1271uF

C311uF

R127 0R

R81 27R DNP

R128 0R

C294.7uF

C281uF

R80 0R

C3010uF

6. Revision History

Table 6-1. Deisgn Optimization for Low-Power SAMA5D3-based Systems App Note Rev. 11291A Revision History

Doc. Rev.11291A Changes

23-Jun-14 First issue


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© 2014 Atmel Corporation. / Rev.: Atmel-11291A-ATARM-Low-Power-Design-for-SAMA5D3-based-Systems-Application-Note_23-Jun-14.

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