ds2488 evaluation kit - evaluates: ds2488d2 dnp dtr 1ps76sb21 v+ 1 d-2 d+ 3 4 v-5 2 s1 s s s s s3 s...

Evaluates: DS2488DS2488 Evaluation Kit

General DescriptionThe DS2488 evaluation kit (EV kit) provides the hard-ware and software necessary to exercise the features of the DS2488. The EV system consists of two boards: the DS9401 and DS2488 EV kit boards. The DS2488 board contains two DS2488 parts. The evaluation software runs on Windows® 10, 8, and 7 operating systems. It provides a handy user interface to exercise the features of the DS2488.

Features ● Demonstrates the Features of the DS2488 ● Fully Compliant with USB Specification v2.0 ● Software Runs on Windows 10, 8, and 7 ● Convenient On-Board Test Points

319-100602; Rev 0; 9/20

Ordering Information appears at end of data sheet.

Windows is a registered trademark and service mark of Microsoft Corporation.1-Wire is a registered trademark of Maxim Integrated Products, Inc.

Quick StartRequired EquipmentThis section includes a list of recommended equipment and instructions on how to set up the Windows-based PC for the evaluation software.

● DS9401 (included) ● DS2488 EV kit (included) ● 2 USB Type A to Micro-USB Type B cable (included) ● PC with a Windows 10, 8, or 7 operating system and

two spare USB 2.0 or higher ports ● Download DS2488 EV kit software

Software and Hardware Installation and Setup1) Unplug any Maxim adapters before installing software.2) Install Prolific drivers from http://www.prolific.com.

tw/US/ShowProduct.aspx?p_id=225&pcid=41 if not already installed.

3) Unzip the EV kit software folder.4) Run setup.exe to run installer.5) Click the Install button on the Application Install -

Security Warning notification to install the EV kit software (see Figure 1).

6) Connect JB1 on DS9401 board (see Figure 2).

QTY DESCRIPTION

1 DS9401 1-Wire® master with 5V charging board

1 DS2488 EV kit evaluation board with two DS2488 parts

2 USB Type-A to Micro-USB Type-B Cable

DS2488 EV Kit Contents

Click here to ask about the production status of specific part numbers.

https://maximsupport.microsoftcrmportals.com/en-US/cust-support/

Maxim Integrated │ 2www.maximintegrated.com


7) Connect JB1, JB2, JB3, JB5, JB6 and the VL row on JB4 on the DS2488 EV kit board (see Figure 3).

8) Connect the DS9401 and DS2488 EV kit boards to the PC using the USB cables. Ensure no other prolific devices are connected to the PC.

9) Connect the DS9401 to the DS2488 EV kit board.10) Launch the DS2488 EV kit software.

Figure 1. Install Warning



Figure 2. DS9401 Board

Figure 3. DS2488 EV Kit Board



11) Click on Auto Detect (see Figure 4).12) Click on Connect (see Figure 4) and the window automatically changes to the TWS Demo tab if a connection to

the hardware is successful (see Figure 5).

Figure 4. EV Kit Setup Tab



Figure 5. EV Kit Software Demo Tab



EV Kit Supported FunctionsThe DS2488 EV kit program is designed as a usage example.

Use the software to evaluate the DS2488 and the GUI displays the 1-Wire sequences for each step to assist the firmware engineer.

Table 1. Usage Flows

#Denotes RoHS compliance.

FLOW DESCRIPTIONDetect Earbuds Does a 1-Wire, Search ROM to determine which earbuds are connected to the charge box.IOA Low/Dead Battery Set IOA to logic-low to simulate dead battery, or to pass token to IOBSend Message Uses UART to send message between charge box an ear budWrite PIOA Level Use 1-Wire commands to set the PIOA levelSet PIOB Level Set PIOB level using pin from the prolific chipRead PIO Levels Uses 1-Wire commands to read the levels of the PIO pinWrite buffer Writes specified hex data to 8-byte bufferRead buffer Reads written data in 8-byte buffer

PART TYPEDS2488EVKIT# EV Kit

Ordering Information



DESIGNATOR QTY DESCRIPTION MANUFACTURER PART NO.C1, C4, C8 3 CAP CER 0.1UF 16V X7R 0603 Kemet C0603C104K4RACTU

C2, C3 2 CAP CER 4.7UF 16V Y5V 0805 Samsung Electro-Mechanics CL21F475ZOFNNNEC6 1 CAP CER 10UF 10V Y5V 0805 Yageo C2012Y5V1A106Z

C7,C5 2 CAP CER 2.2UF 6.3V 10% X5R 0603 Yageo CC0603KRX5R5BB225

CN1 1 CONN RCPT USB2.0 MICRO B SMD R/A Amphenol ICC (FCI) 10118193-0001LF

D2 1 DIODE SCHOTTKY 40V 200MA SOD323 (DNP) Nexperia USA Inc. 1PS76SB21,115

FB1, FB2 2 FERRITE BEAD 220 OHM 0805 1LN Murata Electronics North America BLM21PG221SN1D

JB1 1 CONN HEADER VERT 2POS 2.54MM Amphenol ICC (FCI) 68000-102HLFP1 1 CONN HDR 2POS 0.1 GOLD PCB R/A Sullins Connector Solutions PPPC021LGBN-RCP2 1 CONN HEADER VERT 2POS 2.54MM Amphenol ICC (FCI) 68000-102HLFQ1 1 MOSFET P-CH 20V 2.8A SOT-23 PMV65XP,215 PMV65XP,215

Q2, Q3 2 MOSFET N-CH 60V 115MA SOT23-3 Diodes Incorporated 2N7002-7-FR1, R7, R9, R12 4 RES SMD 200K OHM 1% 1/10W 0603 Yageo RC0603FR-07200KL

R2, R8 2 RES SMD 1K OHM 1% 1/10W 0603 Panasonic Electronic Components ERJ-3EKF1002V

R3, R11 2 RES SMD 1K OHM 1% 1/10W 0603 Yageo RC0603FR-071KL

R4, R5 2 RES SMD 0.0 OHM JUMPER 1/10W Panasonic Electronic Components ERJ-3GEY0R00V

R6 1 DNP R10 1 RES SMD 10 OHM 1% 1/10W 0603 Yageo RC0603FR-0710RLR13 1 RES SMD 5.1K OHM 1% 1/10W 0603 Bourns Inc. CR0603-FX-5101ELFR14 1 RES 4.12K OHM 1% 1/10W 0603 Stackpole Electronics Inc RMCF0603FT4K12R15 1 RES 11K OHM 1% 1/10W 0603 Stackpole Electronics Inc RMCF0603FT11K0R16 1 RES SMD 4.7K OHM 1% 1/10W 0603 Rohm Semiconductor MCR03ERTF4701U1 1 USB to Serial Bridge Prolific PL-2303GC

U2 1 High-Voltage, Low-Power Linear Regulator Maxim Integrated Products MAX1616EUK+

DS9401 Bill of Materials



DESIGNATOR QTY DESCRIPTION MANUFACTURER PART NO.C1, C2 2 CAP CER 4.7UF 16V Y5V 0805 Samsung Electro-Mechanics CL21F475ZOFNNNE

C3, C6, C7, C10, C11, C12 6 CAP CER 0.1UF 16V X7R 0603 Kemet C0603C104K4RACTU

C4 1 CAP CER 10UF 10V Y5V 0805 Yageo C2012Y5V1A106ZC5, C9 2 CAP CER 2.2UF 16V Y5V 0805 Yageo CC0805ZRY5V7BB225

C8, C13 2 CAP CER 2.2UF 6.3V X5R 0603 Taiyo Yuden JMK107BJ225KA-TCN1 1 CONN RCPT USB2.0 MICRO B SMD R/A Amphenol ICC (FCI) 10118193-0001LF

D1 1 Green 523nm LED Indication - Discrete 3.2V 0603 Dialight 5988081107F

D2 1 DIODE SCHOTTKY 40V 200MA SOD323 Nexperia USA Inc. 1PS76SB21,115

FB1, FB2 2 FERRITE BEAD 220 OHM 0805 1LN Murata Electronics North America BLM21PG221SN1D

JB1, JB2, JB3, JB5, JB6, J1 6 CONN HEADER VERT 2POS 2.54MM Amphenol ICC (FCI) 68000-102HLF

JB4 1 CONN HEADER VERT 4POS 2.54MM Amphenol ICC (FCI) 67996-104HLFP1 1 CONN HEADER R/A 2POS 2.54MM Sullins Connector Solutions PRPC002SBAN-M71RCP2 1 CONN HEADER VERT 12POS 2.54MM Amphenol 67996-212HLF

Q1, Q2 2 TRANS PNP 40V 0.6A SOT23 On Semiconductor MMBT4403LT1G

R1 1 RES SMD 5.1K OHM 1% 1/10W 0603 Panasonic Electronic Components ERJ-3EKF5101V

R2 1 RES SMD 4.12K OHM 1% 1/10W 0603 Panasonic Electronic Components ERJ-3EKF4121V

R3 1 RES SMD 11K OHM 0.1% 1/10W 0603 Panasonic Electronic Components ERA-3AEB113V

R4, R7 2 RES SMD 200K OHM 1% 1/10W 0603 Panasonic Electronic Components ERJ-3EKF2003V

R5, R8, R18 3 RES SMD 680 OHM 1% 1/10W 0603 Vishay Dale CRCW0603680RFKEAR6, R17 2 100K/0603 Yageo RC0603FR-07100KL

R9 1 RES SMD 10K OHM 1% 1/10W 0603 Panasonic Electronic Components ERJ-3EKF1002V

R10 1 RES SMD 10 OHM 1% 1/10W 0603 Yageo RC0603FR-0710RL

R11 1 RES SMD 220 OHM 1% 1/10W 0603 Panasonic Electronic Components ERJ-3EKF2200V

R12, R13 2 RES SMD 0.0 OHM JUMPER 1/10W Panasonic Electronic Components ERJ-3GEY0R00V

R14 1 DNP R15, R19, R20,

R21, R22 5 RES SMD 100K OHM 1% 1/10W 0603 Vishay Dale CRCW0603100KFKEA

R16 1 RES SMD 1K OHM 1% 1/10W 0603 Yageo RC0603FR-071KLR23 1 RES SMD 4.7K OHM 1% 1/10W 0603 Vishay Dale CRCW06034K70FKEAU1 1 Linear Voltage Regulator Maxim Integrated Products MAX1616EUK+U2 1 USB to Serial Bridge Prolific/Techtonica PL-2303GC

U3, U5 2 1-Wire Dual Port Link Maxim Integrated DS2488X+UU7 1 IC FF D-TYPE SNGL 1BIT US8 ON Semiconductor NC7SZ74K8X

DS2488EVKIT Bill of Materials



DS9401 Schematic

DPCNDMCN

DMCN

VCC5.0

TXDDTRRTSVCC

GNDVO3.3

DPCN

VCC5.0

GNDGND_EARTH

C1

0.1uF

FB1BLM21PG221SN1D

FB2BLM21PG221SN1D

R10

10

GND

GND

TXD 1

DTR 2

RTS 3

VDD-325 4

RXD 5

RI 6

GND 7

DSR 9

DCD 10

CTS 11

SHUTDOWN 12

GPIO-3 13

GPIO-2 14USB PORT D+15 USB PORT D-16 VO3.317 GND18 RESET19 VDD520 NC21 GPIO-022 GPIO-123 NC24 GND25 TEST26 NC27 12MHz Out*28

NC 8

U1

PL-2303HXD or PL-2303GC

Design Note:DCD is set to LOW to detect as charging box.

PL-2303HXD and PL-2303GC have different assembly BOMsTake note of the Assembly Variant field when using a PL-2303GC or PL-2303HXD

TXD needs to be set to open drain and the diode shorted when using a PL-2303GC

VCC5.0

GND

D

S

G1

23

Q22N7002

R2

10K

R3

1KS

D

G

Q1PMV65XP,215

R7

200K

GND

DS

G1

2 3

Q32N7002

GND

R8

10K

R9

200KR1

200KR12

200K

RI

RI

DSR

DSR

CTS

CTS

TP2

TP3

TP1

TP4

TP5

TP6

TP7

TP8

VIA TEST POINTS

RTS

DCD

DCD

TXD

RXD

RXD

DTR

GND

IOA

VCC5.0 Place C4 close to U2-1 VCC

GND

SHORT FOR 3.3V OPERATION

12JB1

JUMPBLOCK 1

3.3V or 1.8V

21

P1

100mil Spaced Header12

P2

100mil Spaced Test Point

VCC

VO3.3

R11

1K

DTRDNPD21PS76SB21

V+ 1

D- 2

D+ 34

V- 5

S12

SSS

SS3

SS4

S5S S

S6

CN1uUSB

IN1 OUT 3

SHDN FB 45

U2

MAX1616EUK+

R135.1K +/-1%

R1511K +/-1%

C4

0.1uF

C24.7uF

C3

4.7uF

R144.12K +/-1%

TP9VCC

TP10VCC5.0

C72.2uF

HXD=1.5K

R6

DNP

HXD=27

R4 0R

C610uF

VO3.3

HXD=0R

R16

4.7kHXD=DNP

C8

0.1uFRSTZ

GND

RSTZ

NTNT1

HXD=27

R5 0R

C52.2uF



DS2488 EV Kit Schematic

VCC5.0

IN1 OUT 3

SHDN FB 45

U1

MAX1616EUK+GND

DMCN

VO3.3

GND

VCC5.0

TXD

IOB

RTSVCC1.8

GNDVO3.3

DPCN

GP0GP1

Place C3 close to U1-1

R15.1K +/-1%

R311K +/-1%

C3

0.1uF

C14.7uF

C2

4.7uF

C60.1uF

GND

GND

R24.12K +/-1%

1

4

23

TD

VRT

XT

DSRD

D-325

67 G

RIRX

ND

D5

9

11

11

32

01

SG

DDCTHP

SCDS

R

UIO-T3DOWN

GPIO-214 USB PORT D+ 15USB PORT D- 16VO3.3 17GND 18RESET 19VDD5 20NC 21GPIO-0 22GPIO-1 23NC 24GND 25TEST 26NC 2712MHz Out* 28

NC8

U2

PL-2303GC

VCC1.8

GND

3

1

2

Q1MMBT4403LT1G

R8680

R6

DNP

C52.2uF

GND

TOKEN B1

IOB B3

PIOB A2

IOAA4

PIOA A1

VL A3CD/PIOCB2

GNDB4

U3

DS2488X (WLP)

GNDDPCNDMCN

VCC5.0

GND GND_EARTH

C410uF

FB1BLM21PG221SN1D

FB2BLM21PG221SN1D

R10

10

R161K

R4200KR7200K

RI

CTS

VL

CTS

RI

DSRDCD

CD

C7

0.1uF

GND

Do Not Connect

GND

Changes 1.8V to 3.3V

12

JB1JUMPER

IOA

GND

R15100KTP1

D1GREEN LED

3

1

2

Q2MMBT4403LT1G

R18680

R17DNP C9

2.2uF

GND

TOKEN B1

IOB B3

PIOB A2

IOAA4

PIOA A1

VL A3CD/PIOCB2

GNDB4

U5

DS2488X (WLP)

GND

PIOC'

IOA'

C10

0.1uF

GND12

JB2

JUMPER

R910K

DCD

PIOA'PIOB'

12

JB3

JUMPER

VCharger_Power'

R19

100KR20

100KR21

100K VCC1.8R22

100K VL'

VL'

1 23 4

JB4

JUMPBLOCK 2

LEFT EARBUD

RIGHT EARBUD

12

P1

CON2

IOA*

RTSCTS

S1

SOLDER JUMPER

2 VD-+1

D+34

V-5

S1S S

S2S

S3S

S4S56

SSS

CN1uUSB

VCC1.8

1 2JB5

JUMPBLOCK 1 R11 220DNPD21PS76SB21

GND4

VCC 8

CLK127 P

DRE

CLR6

Q 5

Q 3

U7

NC7SZ74

DSR

C110.1uF

VCC1.8

RI

GND GND

DTR

DTRDSR

VCC1.8

VL

R5

6801 2

JB6

JUMPER

2 1

J1Charge Port

LEFT CHARGE

GND VCC1.8IOB'TOKEN'

PIOA'PIOB'

VL'

IOA'PIOC'

GND

IOB'TOKEN'

VCharger_Power'

1 23 45 67 89 1011 12

P2

HEADER 6x2

IOB

RSTZ

RSTZ

GND

GND

Design Note:

PL-2303HXD and PL-2303GC have different assembly BOMsTake note of the Assembly Variant field when using a PL-2303GC

NTNT1

C132.2uF

R14

DNP

R12

0R

HXD=0R

R23

4.7k

HXD=DNP

C120.1uF

R13

0R

C8

2.2uF

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2020 Maxim Integrated Products, Inc. │ 11


REVISIONNUMBER

REVISIONDATE DESCRIPTION PAGES

CHANGED

0 9/20 Initial release —

Revision History

For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.

ds2488 evaluation kit - evaluates: ds2488d2 dnp dtr 1ps76sb21 v+ 1 d-2 d+ 3 4 v-5 2 s1 s s s s s3 s...

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