Maxim integrated Usb2gpio User manual

Evaluates: USB2GPIO

USB2GPIO# Adapter Board

General Description

The USB2GPIO# adapter board is designed to work

with Maxim’s Munich GUI and to connect to various EV

kit or Pmod boards with Pmod™ compatible connectors

for I2C/SPI/GPIO communication to test and evaluate

different Maxim ICs. This document explains how the

USB2GPIO# adapter board receives commands from

a laptop through the USB to create an I2C/SPI/GPIO

interface. The Maxim USB2GPIO# board requires the

Munich GUI which can be downloaded from Maxim’s

website free of charge.

The USB2GPIO# design is powered directly from the USB

bus power (5V) and integrates two low-power, 1.2A, PWM

step-down DC-DC converters (MAX1556) to provide

programmable VCC voltages of 1.8V, 2.5V, 3.3V, or 5.0V.

A dual, high-speed, USB-to-multipurpose UART/FIFO IC

(FT2232HQ), high-speed USB switches (MAX4983), and

a 4K MICROWIRE-compatible serial EEPROM are the

other ICs on this adapter board.

USB2GPIO# is designed to supersede USB2PMB1# and

USB2PMB2# adapters and includes two connectors;

connector X3 is a 12-pin connector which supports either

I2Cwith 6 GPIO pins, or SPI with 4 GPIO pins, and is

fully compatible with previous adapters and low-pin count

EV kit or Pmod boards. This connector is controlled from

the Munich GUI. The addition of another connector, X2,

which is a 20-pin connector allows either 16 extra GPIO

connections or a second SPI port and 12 extra GPIO

connections. This 20-pin connector is NOT controlled by

Munich GUI but is for use with future EV kits and will be

controlled by the relevant EV kit GUIs.

This USB2GPIO# adapter board can be used to enable

USB-to-I2C/SPI interface for any Pmod-compatible plug-in

peripheral modules such as the Maxim MAX14001PMB#,

and MAXREFDES12 – Corona reference designs. In

addition, it can be ordered together as an evaluation

system (EV system) with different EV kits, such as

MAX14001EVKIT#. Note that an “EV system” is an EV kit

combined with an interface board, such as a USB2GPIO#

and EV kit GUI software. Ordering information for EV

systems is included in the EV kits’ corresponding data

sheet. Refer to the appropriate EV kit data sheet for quick

start and detailed operating instructions.

The USB2GPIO# has been tested on Windows®7,

Windows 8, and Windows 10 system using Munich GUI,

Version 2.17 or later.

319-100131; Rev 0; 1/18

Ordering Information appears at end of data sheet.

Windows and Windows XP are registered trademarks and

registered service marks of Microsoft Corporation.

Pmod is a trademark of Digilent Inc.

Features

●USB-to-I2C/SPI/GPIO Interface

●Small PCB area

●Pmod-Compatible Form Factor

Figure 1. USB2GPIO# Board

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Evaluates: USB2GPIO

USB2GPIO# Adapter Board

Quick Start

Required Equipment

●PC with Windows OS (Windows 7, Windows 8, or

Windows 10) with a USB port

●USB2GPIO# board

●A-to-Micro-B USB cable (not supplied)

●Munich software V2.17 or later

●Supported I2C or SPI interface device for communication

like MAX14001PMB# board

Procedure

The USB2GPIO# is fully assembled and tested. Follow

the steps below to verify board operation:

1) Go to www.maximintegrated.com/evkitsoftware

to download the most recent version of the Munich

GUI software, MUNICH GUI. Save the software to a

temporary folder and decompress the Munich_GUI-

SetupV2.17.zip le.

2) Connect the USB cable between the USB2GPIO#

board and the PC; the USB driver is installed

automatically.

3) Ensure that the companion SPI interface device’s

jumper settings are correct. Refer to your companion

device’s documentation.

4) Connect the USB2GPIO# board’s 2 x 6-pin, right-

angle connector to the companion device’s 2 x 6-pin,

right-angle header, as shown in Figure 2.

5) Once the USB2GPIO# board is connected to the

companion device, open the MUNICH GUI.exe

(double-click) software.

6) Start the Munich GUI software and select the tab

sheet that corresponds to the companion device.

Follow instructions in the companion device data

sheet to test it in conjunction with USB2GPIO#.

Figure 2. USB2GPIO# Board Connected with MAX14914PMB#

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USB2GPIO# Adapter Board

Detailed Description of Hardware

The USB2GPIO# board uses the FT2232HQ (U1), a USB

2.0 high-speed (480Mbps)-to-UART/FIFO IC, to process

commands sent by a program running on the PC. Each

particular EV kit has its own custom software specic

to that kit. The operation of this board is USB-to-dual-

channel I2C and SPI engine with additional GPIO channels.

The subsystem block diagram and simplied power tree

are shown in Figure 3.

The VCCIO and +3.3V voltage supplies are generated

by two MAX1556ETBs (U5 and U6), 1.2A, highly efcient

PWM step-down DC-DC converters. The 5V supply volt-

age input for these ICs is provided by the Micro-USB

supply terminal available from the laptop. The 3V3 sup-

ply provides power to the FDTI chip’s VREGIN pin and

its internal oscillator through an LC lter, and the 4K

MICROWIRE EEPROM (93LC66BT). The USB-to-I2C/SPI

engine is powered by 3.3V at the VREGIN pin and the core

voltage of 1.8V for the IC is generated at VREGOUT. This

VCORE is used within the FTDI IC itself for its internal logic

processes and there is an external 12MHz crystal across

OSCI and OSCO pins of the FTDI IC. See USB2GPIO#

Adapter Board Schematic for details.

Pmod and Connector Supply Voltages

The USB2GPIO# is designed to supply power (V_OUT) to

external boards through the connectors X2 and X3. This

voltage is dened by the type of board connected to X3,

and when the user selects that tab in the Munich GUI,

V_OUT is automatically set to the correct level, either

1.8V, 2.5V, 3.3V, or 5.0V.

Figure 3. USB2GPIO# Subsystem Block Diagram

USB

FT22 32HQ

SWITCHES

MAX 49 83, U2, U4

DC-DC

MAX 15 56, U5

DC-DC

MAX 15 56, U6

12-PIN

20-PIN

+5V

VC CIO

+3V3

V_OUT

SPI/I2C

V_OUT

GPIO

SELE CT

VOLTAGE

OUT PU T

M1 - M5

V_OUT

VC CIO

+5V

VC CIO

+3V3

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Evaluates: USB2GPIO

USB2GPIO# Adapter Board

Figure 4 shows the pin conguration for the 12-pin SPI/

I2C-compatible Pmod connector on the USB2GPIO#

board which aligns to the pin conguration for the

connector found on companion Pmod boards such as

MAX14001PMB#. The connector type is female on the

USB2GPIO# board and male type on the companion

Pmod boards.

Figure 5 shows the pin configuration for the 20-pin GPIO-

compatible connector on the USB2GPIO# board which

aligns to the pin configuration for the connector found on

companion EV kit boards. The connector type is female

on the USB2GPIO# board and male type on the companion

EV kit boards. Note that this connector is NOT used by

the Munich GUI, but by the appropriate EV kit GUI. The

pinout for this connector includes allowing for an extra SPI

port should the EV kit require this functionality.

Figure 4. X3: Pmod SPI/I2C Connector Pin Configuration

Figure 5. X2: GPIO Connector Pin Configuration

1 7

2 8

3 9

4 10

5 11

6 12

SPI/I2C PIN CONFIGURATION

CS/IO

MOSI/IO

MISO/SCL

SCLK/SDA

GND

V_OUT

GND

V_OUT

19 20

17 18

15 16

13 14

11 12

9 10

GPIO PIN CONFIGURATION

GND

CS/IO

GND

7 8

3 4

1 2

MISO/IO

MOSI/IO

SCLK/IO

V_OUT

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Evaluates: USB2GPIO

USB2GPIO# Adapter Board

Figure 6 shows the top view of the USB2GPIO# board,

with the different connectors and the pin 1 identifiers.

Note that there are no jumpers or shunts on this

board, all configuration is done under software control.

Care should be taken to only insert the boards in the

correct way as the connectors are not keyed to avoid false

insertions—reversing the connections (by turning the

Pmod board upside down, for example) may result in

damage to the USB2GPIO# or the companion board. Two

LEDs are included to indicate if the X3 Pmod connector is

configured as SPI or I2C.

Figure 6. USB2GPIO# Orientation and Pinouts

#Denotes RoHS compliant.

Ordering Information

PART TYPE

USB2GPIO# Adapter Board

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USB2GPIO# Adapter Board

USB2GPIO# Adapter Board Bill of Materials

ITEM REF_DES DNI/DNP QTY MFG PART # MANUFACTURER VALUE DESCRIPTION COMMENTS

1C1 - 1

C0603C103K5RAC;

GRM188R71H103K;C06

03X7R500-103KNE

KEMET/MURATA/VENKEL LTD. 0.01UF

CAPACITOR; SMT; 0603;

CERAMIC; 0.01uF; 50V;

10%; X7R; -55degC to +

125degC

2C2, C12, C14 - 3 GRM21BR71C475KA73 MURATA 4.7UF

CAPACITOR; SMT (0805);

CERAMIC CHIP; 4.7UF; 16V;

TOL=10%; MODEL=GRM

SERIES; TG=-55 DEGC TO

+125 DEGC; TC=X7R

3C3, C4, C8, C13,

C15-C22, CX3B -13 C0603C104K5RAC;

C1608X7R1H104K KEMET; TDK 0.1UF

CAPACITOR; SMT (0603);

CERAMIC CHIP; 0.1UF; 50V;

TOL=10%; TG=-55 DEGC TO

+125 DEGC; TC=X7R;

4C5, C6 - 2

C0603C330J5GAC;

GRM1885C1H330JA01;

ECU-V1H330JCV

KEMET/MURATA/PANASONIC 33PF

CAPACITOR; SMT; 0603;

CERAMIC; 33pF; 50V; 5%;

C0G; -55degC to + 125degC;

0 +/-30PPM/degC

5C7, CP1, CP5,

CX3A - 4

CL21A106KOQNNN;

GRM21BR61C106KE15;

EMK212ABJ106KD

SAMSUNG ELECTRONICS;

MURATA; TAIYO YUDEN 10UF

CAPACITOR; SMT (0805);

CERAMIC CHIP; 10UF; 16V;

TOL=10%; TG=-55 DEGC TO

+85 DEGC; TC=X5R

6CP2, CP6 - 2

C0805C226M9PAC;

GRM21BR60J226ME39;

JMK212BJ226MG;

CL21A226MQCLQN

GENERIC PART 22UF

CAPACITOR; SMT (0805);

CERAMIC CHIP; 22UF; 6.3V;

TOL=20%; TG=-55 DEGC TO

+125 DEGC; TC=X5R

7CP3, CP7 - 2

C0603C102K5RAC;

GRM188R71H102KA01;

C0603X7R500-102KNE

KEMET/MURATA/VENKEL 1000PF

CAPACITOR; SMT; 0603;

CERAMIC; 1000pF; 50V;

10%; X7R; -55degC to +

125degC; +/-15% from -

55degC to +125degC

8CP4, CP8 - 2

C0603C105K3PAC;

GRM188R61E105KA12;

06033D105KAT2A

KEMET; MURATA; AVX 1UF

CAPACITOR; SMT (0603);

CERAMIC CHIP; 1UF; 25V;

TOL=10%; TG=-55 DEGC TO

+85 DEGC;

9FB1-FB3 - 3 BLM21PG331SN1 MURATA 330

INDUCTOR; SMT (0805);

FERRITE-BEAD; 330; TOL=+/-

25%; 1.5A

10 I2C, SPI - 2 150060VS75000 WURTH ELECTRONICS INC 150060VS75000

DIODE; LED; WL-SMCW

SMD CHIP LED TOP VIEW

MONO-COLOR WATER

CLEAR; GREEN; SMT (0603);

VF=2V; IF=0.02A

11 L1, L2 - 2 B82432T1332K TDK 3.3UH

INDUCTOR; SMT (1812);

FERRITE CORE; 3.3UH;

TOL=+/-10%; 0.9A

12 M1, M3 - 2 NTTFS5116PL ON SEMICONDUCTOR NTTFS5116PL

TRAN; POWER MOSFET;

PCH; WDFN8; PD-(40W); I-(-

20A); V-(-60V)

13 M2 - 1 SI2319DS-T1-E3 VISHAY SILICONIX SI2319DS-T1-E3

TRAN; P-CHANNEL D-S

MOSFET; PCH; SOT-23;

PD-(0.75W); I-(-2.3A);

V-(-40V)

14 M4, M5 - 2 IRLML6346 INTERNATIONAL RECTIFIER IRLML6346

TRAN; HEXFET POWER

MOSFET; NCH; SOT-23; PD-

(1.3W); I-(0.00025A); V-(30V)

15 MT1-MT4 - 4 P440.375 GENERIC PART N/A

MACHINE SCREW;

SLOTTED; PAN; 4-40IN;

3/8IN; NYLON

16 MT1-MT4 - 4 1902B GENERIC PART N/A

STANDOFF; FEMALE-

THREADED; HEX; 4-40IN;

3/8IN; NYLON

17 Q1 - 1 ECS-120-20-33 ECS INC 12MHZ CRYSTAL; SMT; 20PF;

12MHZ; +/-50PPM; +/-50PPM

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Evaluates: USB2GPIO

USB2GPIO# Adapter Board

USB2GPIO# Adapter Board Bill of Materials (continued)

ITEM REF_DES DNI/DNP QTY MFG PART # MANUFACTURER VALUE DESCRIPTION COMMENTS

18 Q2, Q3 - 2 PMGD280UN NXP PMGD280UN

TRAN; DUAL N-CHANNEL

UTRENCHMOS ULTRA LOW

LEVEL FET; NCH; SOT-363;

PD-(0.4W); I-(0.87A); V-(20V)

19 R1, R9-R11, R16,

R17, RP3, RP4 - 8 CRCW060310K0FK;

ERJ-3EKF1002 VISHAY DALE; PANASONIC 10K

RESISTOR; 0603; 10K;

1%; 100PPM; 0.10W; THICK

FILM

20 R2 - 1 CRCW060315K0FK VISHAY DALE 15K

RESISTOR, 0603,

15K OHM,1%, 100PPM,

0.10W, THICK FILM

21 R3 - 1 CRCW060312K1FK VISHAY DALE 12.1K

RESISTOR; 0603;

12.1K OHM; 1%; 100PPM;

0.1W; THICK FILM

22 R4, R5 - 2 CRCW060310R0FK;

MCR03EZPFX10R0 VISHAY DALE/ROHM 10

RESISTOR; 0603;

10 OHM; 1%; 100PPM;

0.10W; THICK FILM

R6, R12-R15,

R18-R37, RAD9,

RAD10

-27 CRCW040210K0FK;

RC0402FR-0710K VISHAY DALE; YAGEO PHICOMP 10K

RESISTOR; 0402;

10K; 1%; 100PPM; 0.0625W;

THICK FILM

24 R7 - 1 CRCW04022K20FK;

RC0402FR-072K2L VISHAY DALE/YAGEO PHICOMP 2.2K

RESISTOR, 0402,

2.2K OHM, 1%, 100PPM,

0.0625W, THICK FILM

25 RL1, RL2 - 2 ERJ-2GEJ471X PANASONIC 470

RESISTOR; 0402;

470 OHM; 5%; 200PPM;

0.10W; THICK FILM

26 RP1, RP2 - 2 CRCW0603100RFK;

ERJ-3EKF1000 VISHAY DALE/PANASONIC 100

RESISTOR; 0603;

100 OHM; 1%; 100PPM;

0.10W; THICK FILM

27 U1 - 1 FT2232HQ FUTURE TECHNOLOGY

DEVICES INTL LTD. FT2232HQ

IC; MMRY; DUAL HIGH

SPEED USB TO

MULTIPURPOSE

UART/FIFO; QFN64-EP

28 U2, U4 - 2 MAX4983EEVB+ MAXIM MAX4983EEVB+

IC; ASW; HI-SPEED

USB 2.0 SWITCH WITH +/-

15KV ESD; UTQFN10

29 U3 - 1 93LC66BT-I/OT MICROCHIP 93LC66BT-I/OT

IC; EPROM; 4K

MICROWIRE SERIAL

EEPROM; SOT23-6

30 U5, U6 - 2 MAX1556ETB+ MAXIM MAX1556ETB+

IC; CONV; PWM

STEP-DOWN DC-DC

CONVERTER; TDFN10-EP

3X3

31 X1 - 1 ZX62RD-AB-5P8 HIROSE ELECTRIC CO LTD. ZX62RD-AB-5P8

CONNECTOR; MALE;

SMT; MICRO-USB

CONNECTOR MEETING

REQUIREMENTS OF USB

2.0 STANDARD; RIGHT

ANGLE; 5PINS

32 X2 - 1 PPTC102LJBN-RC SULLINS ELECTRONICS CORP PPTC102LJBN-RC

CONNECTOR; FEMALE;

THROUGH HOLE;

BREAKAWAY HEADER;

RIGHT ANGLE; 20PINS

33 X3 - 1 PPPC062LJBN-RC SULLINS ELECTRONICS CORP. PPPC062LJBN-RC

CONNECTOR; FEMALE;

THROUGH HOLE; 0.1IN CC;

HEADER; 2 ROW; RIGHT

ANGLE; 12PINS

34 PCB - 1 USB2GPIO_APPS_B MAXIM PCB PCB:USB2GPIO_APPS_B -

TOTAL 106

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Evaluates: USB2GPIO

USB2GPIO# Adapter Board

USB2GPIO# Adapter Board Schematic

19,20 - GND

9 - CS

7 - MISO

5 - MOSI

3 - SCLK

1,2 - VCC

SPI

ALL OTHER PINS GPIO

4 - SDA

6 - VCC

5 - GND

3 - MISO

I2C

1 - CS

4 - SCLK

SPI

2 - IO

3 - SCL

5 - GND

6 - VCC

1 - IO

2 - MOSI

100

IRLML6346 IRLML6346

10K

NTTFS5116PL

VCCIO

10K

V_OUT

SI2319DS-T1-E3

10UF PPTC102LJBN-RC

V_OUT

0.1UF

V_OUT

VCCIO

10K

MAX1556ETB+

3.3UH

12MHZ

100

0.1UF

33PF33PF

VCCIO

10K

MAX4983EEVB+

VCCIOVCCIOVCCIOVCCIO

0.1UF

10K

1000PF

PMGD280UN

1UF

PMGD280UN

3.3UH

10UF

10K

0.1UF

10K

0.1UF 0.1UF

10K

12.1K

0.1UF

2.2K

93LC66BT-I/OT

ZX62RD-AB-5P8

1UF

1000PF

10K

10UF

10K

0.01UF

FT2232HQ

10K

0.1UF

330

1.5A

0.1UF

V_OUT

330

1.5A

PPPC062LJBN-RC

10K

4.7UF0.1UF

10K

0.1UF

10K

10UF 0.1UF

MAX4983EEVB+

PMGD280UN

10K

PMGD280UN

470

MAX1556ETB+

330

4.7UF

1.5A

22UF

15K

V_OUT

0.1UF

22UF

CP1

M4 M5

RP4

RP3

CX3A X2 CX3B

R37

CP4

R22

C5 C6

CP3

RP1RAD9

RAD10

FB1

C3 C2

C16 C17 C18 C20 C21C19 C22

RL1

RL2

SPI

I2C

CP7

FB3

C15C14

C13C12

FB2

CP6

RP2

CP8

CP5

R11

R16

R17

R10

C8C7

R12

R13

R14

R15

R18

R19

R20

R21

R29

R28

R27

R26

R25

R24

R23

R30

R31

R32

R33

R34

R35

R36

CP2

VPLL

ACBUS3

+5V

BCBUS7

BCBUS6

BCBUS5

BCBUS4

BDBUS0 BCBUS1

BCBUS2

BCBUS3

BDBUS1

BDBUS2

BCBUS0

BDBUS3

BDBUS7

BDBUS5

BDBUS4

BDBUS6

BCBUS6

BCBUS5

BCBUS4

ACBUS5

+5V

BDBUS4

BDBUS4 BDBUS3

BDBUS5

MOSI_A

ACBUS1

BDBUS0

ACBUS7

ACBUS3

ACBUS0

V_OUT

ACBUS6

BDBUS0

ACBUS5

ADBUS4

ADBUS5

ADBUS6

ADBUS7

ACBUS7

+5V

BCBUS0

BCBUS1

BCBUS0

+5V

+3V3

+5V

+3V3

+5V

VCORE

+5V

ACBUS6

+3V3

VPHY

VCORE

VPLL

VCORE

BDBUS6

V_OUT

+5V

CS_A

BDBUS5

BDBUS6

BDBUS7

VPHY SDA_A/SCLK_A

BDBUS3

BDBUS1

BDBUS7

V_OUT

BCBUS7

BDBUS2

+5V

BCBUS2

BCBUS3

BCBUS7

MOSI_A

CS_A

ADBUS5

ADBUS7

BCBUS6

BCBUS5

BCBUS4

BCBUS3

BCBUS2

BDBUS2

SCL_A/MISO_A

+5V

V_OUT +3V3

ACBUS1

ACBUS0

ADBUS4

SDA_A/SCLK_A

BCBUS1

VCORE

ADBUS6

2019

1817

1615

1413

1211

109

2 4

1 3

1 2

A K

3613

9 8

1 21 2

1 2

INP LX

PGND

SHDN

OUT

GND

VCC

VSS

CLK

NC2

NO2 COM2

GND

COM1

NO1

NC1 CB

VCC EN

NC2

NO2 COM2

GND

COM1

NO1

NC1 CB

VCC EN

INP LX

PGND

SHDN

OUT

GND

BCBUS7

BCBUS6

BCBUS5

BCBUS4

BCBUS3

BCBUS2

BCBUS1

BCBUS0

ACBUS7

ACBUS6

ACBUS5

ACBUS4

ACBUS3

ACBUS2

ACBUS1

ACBUS0

BDBUS7

BDBUS6

BDBUS5

BDBUS4

BDBUS3

BDBUS2

BDBUS1

BDBUS0

ADBUS7

ADBUS6

ADBUS5

ADBUS4

ADBUS3

ADBUS2

ADBUS1

ADBUS0

OSCO

OSCI

VCORE

GND

VCCIO

EECS

EECLK

EEDATA

TEST

VREGOUT

VREGIN

VCORE

GND

RESET#

SUSPEND#

PWREN#

VCCIO

GND

VCCIO

GND

VCCIO

VPLL

REF

AGND VPHY

SHIELD

10 9876

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USB2GPIO# Adapter Board

USB2GPIO# Adapter Board—Top Silkscreen

USB2GPIO# Adapter Board—Internal 2

USB2GPIO# Adapter Board—Top

USB2GPIO# Adapter Board—Internal 3

USB2GPIO# Adapter Board PCB Layout Diagrams

1”

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USB2GPIO# Adapter Board

USB2GPIO# Adapter Board—Bottom USB2GPIO# Adapter Board—Bottom Silkscreen

USB2GPIO# Adapter Board PCB Layout Diagrams (continued)

1” 1”

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 specications without notice at any time.

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USB2GPIO# Adapter Board

Revision History

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

0 12/17 Initial release —

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

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