USB2PMB1 Adapter Board Evaluates: Munich (USB2PMB1 ) Ordering information for EV systems is included in the EV General Description kits corresponding data sheet. An EV system is an EV kit This document explains how the Munich (USB2PMB1 ) combined with an interface board such as a USB2PMB1 adapter board receives commands from a laptop and custom software. Refer to the appropriate EV kit data through the USB to create an SPI interface. Hardware sheet for quick start and detailed operating instructions. design files as well as results on interfacing The USB2PMB1 has been tested on Windows 7, USB2PMB1 with MAX11300PMB1, Santa Fe Windows 8, and Windows XP . (MAXREFDES5 ), Campbell (MAXREFDES4 ), Fresno (MAXREFDES11 ), and Corona (MAXREFDES12 ) are Adapter Board Contents provided. USB2PMB1 Board Portability has become another word for convenience. Mini-USB Cable These days, almost all of us carry laptops, and this advan- tage can be used to showcase parts to the customers Features offering solutions that can cater to their needs. To have USB-to-SPI Interface that convenience, we need to have a board that interfaces with our laptops to the signal chain electronics that are Small PCB Area present on many of the industrial, medical, and consumer TM Pmod -Compatible Form Factor applications. This adapter board serves this purpose of being a bridge between your laptop and your SPI-enabled Applications devices. Industrial Sensors The Maxim USB2PMB1 board requires custom software Process Control and can be ordered together as an evaluation system Industrial Automation (EV system). The Munich design integrates a low-power, 1.2A, PWM step-down DC-DC converter (MAX1556) a PLCs dual, high-speed, USB-to-multipurpose UART/FIFO IC Medical (FT2232HL) and a 4K MICROWIRE -compatible serial Ordering Information appears at end of data sheet. EEPROM. This Munich adapter board is used to enable USB-to-SPI interface for any Pmod-compatible plug- in peripheral modules such as the Maxim Campbell, Santa Fe, Fresno, and Corona reference designs. Figure 1 X1 X2 Figure 1. Munich USB2PMB1 Board MICROWIRE is a registered trademark of National Semiconductor Corp. Pmod is a trademark of Digilent Inc. Windows is a registered trademark and registered service mark and Windows XP is a registered trademark of Microsoft Corporation. 19-6822 Rev 1 6/15USB2PMB1 Adapter Board Evaluates: Munich (USB2PMB1 ) X2 Figure 3 Figure 2 3.3V 2 1 3.3V FTD12232H GND 3 4 GND SPIA SCLK 5 6 SPIB SCLK USB Pmod 7 8 SPIA MISO SPIB MISO REGULATED POWER MAX1556 3.3V SPIA MOSI 9 10 SPIB MOSI SPIA CS 11 12 SPIB CS SPI COMPATIBLE CONNECTOR : X2 Figure 2. Munich Subsystem Block Diagram Figure 3. X2: Pmod SPI Connector Pin Configuration Detailed Description of Hardware J1 This Munich board uses the FT2232HL (IC1), a USB Figure 4 2.0 high-speed (480Mbps)-to-UART/FIFO IC, to process 7 1 CS commands sent by a program running on the PC. Each particular EV kit has its own custom software specific 8 2 MOSI to that kit. The operation of this board is USB-to-dual- channel SPI engine. 9 3 MISO The V (3.3V) voltage supply is generated by the CCIO SSTRB 10 4 SCLK 27A low quiescent current, 1.2A efficient PWM step- down DC-DC converter, MAX1556ETB (IC2). The 5V sup- GND 11 5 GND ply voltage input for this IC is provided by the Mini-USB supply terminal available from the laptop. The V pin CCIO 3.3V 12 6 3.3V provides power to the FDTI chips V pin and its REGIN internal oscillator though an LC filter, 4K MICROWIRE SPI EEPROM (93LC66BT) (IC3). The USB-to-SPI engine Figure 4. SPI Connector Inputs Found in Santa Fe, Campbell, is powered by 3.3V (V ) at the V pin and the CCIO REGIN Fresno, and Corona core voltage of 1.8V for the IC is generated at V . REGOUT This V is used within the FTDI IC itself for its inter- CORE in Santa Fe, Campbell, Fresno, and Corona. The connec- nal logic processes. There is an external 12MHz crystal tor type is female on the USB2PMB1 board and male across OSCI and OSCO pins of IC1. type on the drivers. Pmod Supply Voltage Quick Start The Munich is also designed to supply power to exter- nal boards (Santa Fe, Campbell, Fresno, and Corona) Required Equipment through the connector X2. It is intended to provide power PC with Windows OS (Windows XP, Windows Vista, supply to the interface circuitry present in the connected Windows 7, or Windows8) with two USB ports driver boards. Munich (USB2PMB1 ) Board Pmod SPI Connector Output Pin and A-to-Mini-B USB cable Connector Input in Santa Fe, Campbell, Fresno, Corona Driver Boards USB2PMB1 custom software Figure 3 shows the pin configuration for the SPI- Any SPI interface device for communication like compatible connector at the USB2PMB1 board. Santa Fe (MAXREFDES5 ) board Figure 4 depicts the pin configuration of connector found Maxim Integrated 2 www.maximintegrated.com