psoc designer module 1: introduction to psoc. 2 module outline section 1: introduction to psoc...
TRANSCRIPT
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PSoC Designer Module 1: Introduction to PSoC
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Module Outline
Section 1: Introduction to PSoC
Section 2: PSoC Designer™ IDE Software
Section 3: Hands-On Example Project
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PSoCAn Introduction
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What is a PSoC Mixed Signal Device?
PSoC combines: • the familiarity of a microcontroller• the configurability of an CPLD• the capabilities of an Mixed –
Signal Array
P rogrammableS ystemo nC hip
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What is PSoC?
PSoC Devices Features:
• Configurable Analog Blocks• Implement ADCs, DACs, filters, amplifiers, comparators, etc.
• Configurable Digital Blocks• Implement timers, counters, PWMs, UART, SPI, IrDA, etc.
• 4KB to 32KB of Flash memory for program storage• 256B to 2KB of SRAM for data storage• M8C Microcontroller: 4 Million Instructions Per Sec
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What is PSoC?Inputs• Each pin can sink 25mA• Programmable filters• Flexible sensor interface I/O• 3 types of ADCs, up to 4
Processing• Fast M8 Microcontroller Core• Multiply Accumulate
Outputs• Each pin can source 10mA• Up to 16 PWMs, Timers, Counters• Up to 9-bit DACs, 14-bit ADCs
Support Functions• EEPROM• Sleep Options• Watch Dog Timer• Low voltage detect
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6k F
las
h
POR
SROM
M8 CPU
BandGap
RAM
PUMP
MAC
PLL/Osc32K Osc
Dec.
GPIO
CY8C27XXX – PSoC 1208
PSoC Die
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PSoC Architecture
InterruptController
LVDSupervisor
WatchdogSleep Timer
Decimator
SMPI2C
SRAMMemory
(up to 2K)
M8CCPUCore
MAC MultiplyAccumulate (up to 2)
FlashProgramMemory(up to32K)
SystemClocking
Generator
24 MHzInternal
Oscillator
Digital PSoC Block Array
Analog PSoC Block Array
ProgrammableInterconnect
and Logic
Analog InputMuxing
Analog OutputDrivers
Port 5
Port 4
Port 3
Port 2
Port 1
Port 0
Co
nfigura
ble I/O P
orts
System
Bu
s
BB
BB
BB
BB
CB
CB CB
CB
CT CT CT CT
SC
SC
SC SC
SC SC
SC
SC
Clocks
BB BB CB CB
BB BB CB CB
Port 6
Port 7
UART
PWM_16
Filter
AD
C
ADC(Decimator)
ADC
I2CSlave, Master, Multimaster
LCD
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Analog Functions (Subset)•ADC Incremental 6-14 bits Delta Sigma 6-13 bits•DAC 6, 8, and 9 bit 6 and 8 bit multiplying•Filters 2-pole Low-pass 2-pole Band-pass•DTMF Dialer•Modulator•Peak Detector•V to I Converter•Amplifiers Programmable Gain Instrumental Inverting•Comparators Programmable Hysteresis Zero-Crossing•CapSense
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Digital Functions (subset)
•Timer 8, 16, 24, 32 bit•Counter 8, 16, 24, 32 bit•PWM 8, 16, 24, 32 bit•Dead Band Generator 8, 16, 24, 32 bit•Pseudo Random Source•Cyclic Redundancy Check•Communication Interface I2C Master I2C Slave SPI Master SPI Slave Full Duplex UART Tx, Rx Full Speed USB v2.0
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• Define connections between pins and function blocks
• Define connections between function blocks
• Define clock paths• Change
connections dynamically too!
Interconnection Scheme
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User Modules
Pre-configured and Pre-characterized Digital and Analog PSoC Blocks
Greatly simplifies and shortens coding process
Analogous to On-chip Peripherals • ADCs, DACs, PGAs, Filters• Timers, Counters, PWMs• UART, SPI, I2C
Defines the Register Bits for Initial ConfigurationSelected via Double Click in IDE
User Modules Include • Application Programmer Interfaces (APIs)• Interrupt Service Routines (ISRs)• Specific UM Data Sheets
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Additional Features
• Comprehensive Design Tools• Intuitive Resource Placement• Easy Routing• Powerful Logic• Dynamic Reconfiguration
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PSoC Design Tools
Free Design Software• Device Editor • Application Editor • C Compiler • Assembler• Librarian• Debugger
Low Cost ICE • CY3215-DK •Trace, Dynamic Event Point• Every thing you need for PSoC development
Graphical Application Design Software……
No MCU Coding!
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PSoC® Designer™ 5.0 A New Paradigm in Embedded Design
• An integration of PSoC software• PSoC Express™ - a visual embedded code free design environment• PSoC Designer 4.4 - a powerful and more traditional IDE
• MS Visual Studio based GUI—dock, tab, and float windows• Upgraded Debugger; new “Run-to-Cursor” breakpoint features
EASY-TO-USE, FAST, FLEXIBLE
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PSoC Designer 5.0 System-Level View (Formerly PSoC Express)
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PSoC Designer 5.0 Chip-Level View (Formerly PSoC Designer 4.4)
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PSoC Designer 5.0 System-Level to Chip-Level Transitions
1
2
3
4
Design & Build
Open Chip-View
Optimize the Design
Customize the Code
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PSoC® Programmer™ 3.xx Customize & Enhance your PSoC Programming Experience
•Customizable GUI—maximize & minimize what you want to see•COM object architecture—open access to programmer functionality•Automatic PSoC Programmable System on Chip Detection•Accelerated prototyping—turn timely verification on/off as needed•Huge array of GUI enhancements—cleaner, easier to use interface
Classic View
Modern View
Simple View
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PSoC Programmer 3.xx Classic View
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PSoC Programmer 3.xx Modern View
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PSoC Programmer 3.xx Simple View
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Section 2: PSoC Designer IDE Software
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3) Press “Place User Module Button”
1) Drag Green “Target Placer” from default location
Intuitive Placement
2) Drag to desired location(Target Placer box fills in green when place-able)
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Easy GUI Routing
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Powerful Combinational Logic
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Powerful Combinational Logic
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Dynamic Reconfiguration
More than meets the eye: Multiple Configurations
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Integrated Development Environment
• Device Editor • Application Editor • C Compiler• Assembler• Librarian• Debugger
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PSoC DesignerDevice Editor – Interconnect View
Placing User Modules• View block architecture with
combined UM & port views• Generates routed block to
block schematic• Routed global I/O connection
schematic• Step through potential UM
placement options• Select desired placement
option for UM• Select UM and resource
interconnections• Select/configure UM and
global device resources• Define clocking for UMs• Configure mode and drive
level for GPIO pins
Global resources table
Global resources table
User module parameter table
User module parameter table
Port tablePort table
UM Workspace
UM Workspace
User Module window
User Module window
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For Users to Write CodeFor Users to Assemble/Compile Code
* The C compiler needs to be enabled for use.
• View and edit individual source files
• Set and remove bookmarks (Editing tool)
• Assemble/compile individual files
• Build entire project including assemble/compile* all files in project
• Source line error pointer
PSoC Designer Application Editor
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PSoC Designer C CompilerThe C compiler by Hi Tech is an optional component of the
PSoC Designer IDE. Once enabled, it is fully integrated into the IDE and allows PSoC Designer to support C source level debugging.
Features Include:• ANSI C Compiler• Supports Inline Assembly and can interface with Assembly Modules• Integrated code compressor• Modern Stack-Based Architecture• 7 Basic Data Types Including IEEE 32-Bit Floating Point• Assembler and Linker• Math and String Libraries• C Interrupt Service Routines• Librarian
For more info on the C compiler, please see the C language compiler user guide in the documentation folder of PSoC Designer.
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• Interface to ICE
• View contents of Register and Memory spaces
• Change the contents of the register banks and the RAM
• Run/Halt /Single Step
• Set breakpoints and event points
• Capture trace
PSoC Designer Debugger
Note: We will not be using the DeBugger during this workshop
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PSoC Hands On Example Project
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PSoC Design Flow
• Determine system requirements
• Choose User Modules
• Place User Modules
• Set global and User Module parameters
• Define the pin-out for the device
• Generate the application
• Review generated code
• Demonstrate working configuration
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Project Requirements
Blink two LEDs at approximately 2Hz, with duty cycle of 40% and 20%
Implementation:
Create An MCU with Two Pulse Width Modulators:
• Select Two PWM User Modules
• Set the PWM parameters
• Initialize the global clocks
• Connect the PWM outputs to the PSoC Pup LEDs
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Project Implementation
÷16 ÷16
16-bit PWM
÷ 65535
16-bit PWM
÷ 65535
24MHzVC1 VC2
(1.5MHz) (94kHz)
P2[0]
P2[1]
(1.4Hz)
(1.4Hz)
PSoC
Pup
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Starting a New Project
• Open PSoC Designer
• Select Start new project
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Starting a New Project
• Select Project Type
• Name The Project
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Starting a New Project
• Select Device and Coding Method • CY8C29466-24PXI• C
• OK
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Select and Place User Modules
Select the PWM16 from the User Modules page
Place User Modules for this Project• How do I know where to place the User
Modules?• How does PSoC Designer help me?
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Place User Modules
Try-out the modules individually first• See how restrictive they are, then return to original location
PSoC Designer will only allow the modules to be placed where the chip can support them
PSoC Designer will not prevent a placement that may create a conflict for resources
• Example: If you have an ADC and temperature sensor, they both use the comparator bus. There is only one comparator bus per column, therefore these two UMs must reside in separate columns in order to be used simultaneously.
Read the UM Data Sheets for details
Use the Cypress Online Resources• www.cypress.com/support
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Place User Modules
Place the two selected User Modules. Double Click on PWM16 wait a few moments until the user module is placed in the Interconnect Window - repeat
PWM16_1 – Digital Blocks DBB00/DBB01 PWM16_2 – Digital Blocks DBB10/DBB11
Recommend placing the PWMs in the Basic Digital Blocks to Save the Digital Communication Blocks
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Place User Modules
• When you are done the screen should look like this
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Configure Global Resources
Power Setting: 5.0V/24MHzCPU_Clock: SysCLK/2 (12MHz)32K_Select: Internal
• Not using an external crystal PLL_MODE: Disable
• PLL can only be enabled when 32K_Select is External (crystal)
Sleep_Timer: 512_Hz. (Default)VC1 = SysClk/N: Set to 16
• This divides 24MHz by 16 = 1.5MHz
VC2 = VC1/N: Set to 16• This divides the 24V1 by 16
(1.5MHz/16=94kHz)VC3 Source: SysClk/1VC3 Divider: 1
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Configure Global Resources
SysClk Source: Internal
SysClk*2 Disable: YES
Analog Power: SC On/Ref Low This is required to power up any of the analog blocks,
depending on the number of analog functions. A Ref Med or Ref High may be required (and will increase power consumption)
Ref MUX: (Vdd/2) ±Bandgap (default)
AGndBypass: Disabled
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Configure Global Resources
Op-Amp Bias: Low (default)
This is not recommended as anything but low
A_Buff_Power: Low (default)
Adequate for most projects This selects the power level of the analog output buffer
There is a tradeoff between drive output power and power consumption.
SwitchModePump: OFF
Trip Voltage [LVD (SMP)]: 4.64V (5.0V)
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Configure User Modules
•PWM16_1: We want to generate a 1/5 duty cycle
•User module parameters can be configured in two ways: through the GUI or through the User Module Parameters window. In this class we will use the User Module Parameters window in the left bottom corner.
Set Clock to VC2 (94kHz) Set Enable High to keep the PWM always runningSet CompareOut to Row_0_Output_0Set TerminalCountOut to NoneSet Period to 65535 (1.4Hz)Set PulseWidth to 13107Compare Type Less Then Or EqualInterrupt Type Terminal CountClockSync to Sync to SysClkInvertEnable set to Normal
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Configure User Modules
PWM16_2: We want to generate a 2/5 duty cycle
Set Clock to VC2 (94kHz)Set Enable High to keep the PWM always runningSet CompareOut to Row_1_Output_1Set TerminaCountOut to NoneSet Period to 65535 (1.4Hz)Set PulseWidth to 26214Compare Type Less Then Or EqualInterrupt Type Terminal CountClockSync to Sync to SysClkInvertEnable set to Normal
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Interconnect Blocks to Resources
What interconnection possibilities are there?• Data Inputs• Data Outputs• Clocks• Block-to-block
When you specify a PSoC block connection to a pin you are making a physical connection to the hardware of the PSoC device.
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Define the Pin-out
What pins need to be defined?• UM Inputs• UM Outputs• General Purpose IO
What happens as pins are defined?
Pin-out our project• LEDs
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Interconnect Blocks to ResourcesRoute PWM16_1 to pin:
• Connect PWM16_1 output to Row_0_Output_0• Connect Row_0_Output_0 to GlobalOutEven_0
Left Click Left Click
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Interconnect Blocks to Resources
Route PWM16_1 output to pin• Port 2 is connected to the LEDs on the Pup board
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Interconnect Blocks Resources
Route PWM16_2 output to pin
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Interconnect Blocks Resources
Route PWM16_2 output to pin
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Configuration Complete!
Save project – Go to File tabNow what? Where are we?
Time to “Generate Application” • All settings used by PSoC Designer
to create the boot-up code to configure the registers at reset
• ISRs are created (but not updated)• APIs are created or updated• Device Data Sheet generated
You must Generate Application whenever changes are made to the configuration
Now switch to the Application Editor view
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Time to Create Application Code
PSoC Designer generates application code based on the configurations you just defined in the Device Editor.
Project File Tree, located to the left of the application window, contains: • all interrupt routines• header files• include files• configuration tables
All APIs and ISRs can be modified by the user.
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Create Application Code
Open the main.c file Type the PWM start commands for each PWM_1 and PWM_2
void main(){ // Insert your main routine code here. PWM16_1_Start () ; PWM16_2_Start () ; while (1); }
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Create Application Code
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Build Project
Assembles code, links, and locatesCan individually assemble files as wellExplore Application Editor Features
• Project file management (view/add/delete files)• Finding compilation errors
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Program The Device
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Program The Device
Select MINIProg in the port window
Select Connect
Select Program
When Programming is complete Toggle Device Power
Congratulations, you have just completed your first PSoC design!
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Appendix
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•Bi-Directional Current Source
•DiffAmp configured with gain of one.• CF=CB=CA=16
• Sign = Pos•External Resistor and DAC value sets current.
• Independent of load.
SCBlock Amplifier Examples
DAC6
DiffAmpBuf0
P0.3P2.1Vload
Vset
Vout
Rset
+A
-B
i = -Vset / Rset
Rload
x1
setloadout VVV
set
set
set
loadout
R
V
R
VVi
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SCBlock Filters FilterCalc
• Enter Following Parameters• Rolloff Frequency (f0)
• Acceptable Tolerance
• Damping Value• Acceptable Tolerance
• Column Clock (fs *4)
FilterCalc generates all Capacitor valuesthat meet these requirements.
Output file readable with Excel. 43 different solutions for this particular
example.
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SCBlock Low Pass Filter
• Programmable• Roll off frequency (f0)• Damping ratio• Gain
• 300 Hz to 250 kHz• Scaled to clock
Vin
Vout
C1
C3
C4
CB
C2
CA
121
41
21
2
4
2
4
32
2
2
2
1
ss
BA
s
S
in
out
CC
fs
CC
CCCC
fs
fs
C
C
V
V
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•Two Cap Comparator
•With feedback capacitor CF removed Vout goes to either the high or low rail.
• Vout goes high when
VinACA > VinBCB
• Vout goes low when
VinACA < VinBCB
•VinB is the inverting input input.
SCBlock as Comparator
1
2
CA
1
12
VinA
Vout
CB
VinB
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•SCBlock Integrator
•Uses standard gain stage with the exception that the switch to discharge CF has been disabled.
•So:
SCBlock as Integrator
1
2
CA
CF
1
2
Vin
Vout
F
Ainoutout C
CVVV
old
sC
Cf
V
V
F
As
in
out 1
12 fs
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•Dual Input SC Integrator•Feedback makes low pass filter with gain.
• Ratio of CA & CB determines gain.
• CF,CB, and fs determines rolloff frequency.
•Setting Vin to Vref makes filter DAC.
• Much higher fs than Conventional DAC
SCBlock as IntegratorSingle Pole LPF
21
1
1
B
F
s
B
A
in
out
CC
fsC
C
V
V
1
2
CA
CF
1
2
Vin
Vout
1
2CB
buf
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•Dual Input SC Integrator•External Emitter follower makes a high power output driver.
• Able to drive all the way to Vss rail
SCBlock as IntegratorPower Driver
1
2
CA
CF
1
2
Vin
Vout
1
2CB
buf
Rload
Vcc
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•Dual Input SC Integrator•Or a 4 Ohm Class B Speaker Driver.
4 Ohm
1
2
CA
CF
1
2
Vin
Vout
1
2CB
buf
Vcc
SCBlock as IntegratorSpeaker Driver
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SCBlock as 2 Pole Filter• Two Pole Filters• Constructed with a BiQuad Circuit Topology
• Continuous Time Implementation shown below• Requires Three Op Amps
• Middle one only used to change polarity
V inVout
R 2
R1
C4
CB
R3
CA
R
R
CPP
CP
1
1
42322
1312
1
2
CsRCCRRs
CsRCCRRs
R
R
V
V
BA
pppA
in
out
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SCBlocks as 2 Pole Filter
• Two Pole Filters• Switched Capacitor Implementation
• Requires Only Two Op Amps
141
21
41
21
2
4
2
4
322
2
2
1
22322
2
CC
fs
CC
CCCC
f
s
CC
C
C
fs
C
C
CC
CC
f
s
V
V
s
BA
s
p
s
pppA
s
in
out
Vin
Vout
C1C3
C4
CB
C2
CA
CPP
CP
High PassBand PassLow Pass
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SCBlock Band Pass Filter
Vin
Vout
C1
C3
C4
CB
C2
CA
AnalogBus
CompBus
• Programmable• Center frequency (fc)• Q• Gain
• 300 Hz to 250 kHz• Scaled to clock
121
41
21
2
4
2
4
32
2
3
2
1
CC
fs
CC
CCCC
fs
fs
CC
fs
C
C
V
V
s
BA
s
S
B
s
in
out
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Elliptical Low Pass Filter
• Combines High Pass• and Low Pass Filters
• Produces two zeros.• Low pass filter when:
Vin
Vout
C1C3
C4
CB
C2
CA
CPP
121
41
41
1
2
4
2
4
32
231
2
2
1
CC
fs
CC
CCCC
fs
CCCC
fs
C
C
V
V
s
BA
s
APP
s
in
out
highpasslowpassff 00
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SCBlock Notch Filter
• Special Case of • Elliptical Low Pass• Filter where:
Vin
Vout
C1C3
C4
CB
C2
CA
CPP
121
41
41
1
2
4
2
4
32
231
2
2
1
CC
fs
CC
CCCC
fs
CCCC
fs
C
C
V
V
s
BA
s
APP
s
in
out
highpasslowpassff 00