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User's Guide
SBOU098–January 2011
SM-USB-DIG Platform
This user's guide describes the characteristics, operation, and use of the SM-USB-DIG Platform. It
provides a detailed description of the hardware design. The SM-USB-DIG Platform is used as part of
several of Texas Instruments evaluation module kits; this document supplements the documentation of
those evaluation module kits.
Contents
1 Overview ..................................................................................................................... 2
2 System Setup ................................................................................................................ 3
3 Theory of Operation ........................................................................................................ 4
4 Bill of Materials ............................................................................................................. 11
List of Figures
1 Typical Hardware Included with the SM-USB-DIG Platform .......................................................... 2
2 Hardware Setup for the SM-USB-DIG Platform......................................................................... 3
3 SM-USB-DIG Platform Block Diagram................................................................................... 4
4 Digital I/O Area—Microcontroller.......................................................................................... 5
5 Digital I/O Area—I
2
C and SPI ............................................................................................. 6
6 Digital I/O Area—CTRL and MEAS....................................................................................... 6
7 Digital I/O Area—Power Regulator ....................................................................................... 7
8 USB I/O....................................................................................................................... 7
9 Firmware EEPROM......................................................................................................... 8
10 Power Indicators ............................................................................................................ 8
11 Reset ......................................................................................................................... 9
12 DUT Power Switching ...................................................................................................... 9
13 Main EVM/Cable Connector (H2) ....................................................................................... 10
Microsoft, Windows are registered trademarks of Microsoft Corporation.
SPI is a trademark of Motorola, Inc.
I
2
C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.
1
SBOU098–January 2011 SM-USB-DIG Platform
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