USB2PMB2 datasheet(2/16 Pages) MAXIM

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USB2PMB2# Adapter Board

Evaluates: Munich (USB2PMB2#)

Detailed Description of Hardware

This Munich board uses the FT2232HL (IC1), 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 specific

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

channel I2C and SPI engine.

The VCCIO (3.3V) voltage supply is generated by the

27µA low quiescent current, 1.2A efficient PWM step-

down DC-DC converter, MAX1556ETB (IC2). The 5V sup-

ply voltage input for this IC is provided by the Mini-USB

supply terminal available from the laptop. The VCCIO pin

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

internal oscillator though an LC filter, 4K MICROWIRE

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

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

This VCORE is used within the FTDI IC itself for its inter-

nal logic processes. There is an external 12MHz crystal

across OSCI and OSCO pins of FTDI IC.

Pmod Supply Voltage

The Munich is also designed to supply power to exter-

nal boards (Santa Fe, Campbell, Fresno, and Corona)

through the connector X2. It is intended to provide power

supply to the interface circuitry present in the connected

driver boards.

Pmod SPI Connector Output Pin and

Connector Input in Santa Fe, Campbell,

Fresno, Corona Driver Boards

Figure 3 shows the pin configuration for the SPI-

compatible connector at the USB2PMB2# board.

Figure 4 depicts the pin configuration of connector found

in Santa Fe, Campbell, Fresno, and Corona. The connec-

tor type is female on the USB2PMB2# board and male

type on the drivers.

Quick Start

Required Equipment

● PC with Windows OS (Windows XP, Windows Vista,

Windows 7, or Windows8) with two USB ports

● Munich (USB2PMB2#) Board

● A-to-Mini-B USB cable

● USB2PMB2# custom software

● Any SPI interface device for communication like

Santa Fe (MAXREFDES5#) board

Figure 2. Munich Subsystem Block Diagram

Figure 3. X2: Pmod I2C/SPI Connector Pin Configuration

Figure 4. SPI Connector Inputs Found in Santa Fe, Campbell,

Fresno, and Corona

Figure 2

USB

Pmod™

FTD12232H

REGULATED POWER

MAX1556 3.3V

SWITCHES

MAX4983

SWITCHES

MAX4983

Figure 3

3.3V

GND

SDA/SPIA_SCLK

SPIB_SCLK

SCL/SPIA_MISO

SPIB_MISO

IO/SPIA_MOSI

SPIB_MOSI

IO/SPIA_CS

SPIB_CS

I2C/SPI-COMPATIBLE CONNECTOR: X2

Figure 4

MOSI

MISO

SSTRB

SCLK

GND

3.3V

SPI

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