Texas Instruments DAC8775EVM, Руководство пользователя, Страница: 10 / 20

EVM Hardware Overview
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10 SBAU248 – November 2016
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DAC8775EVM User’s Guide
2.7 Signal Definitions of J1 (10-Pin SM-USB-DIG Connector)
Table 4 shows the pin-out for the 10-pin connector used to communicate between the EVM and the SM-
USB-DIG. Note that the I
2
C communication lines (I2C_SCL and I2C_SDA1) are not used.
Table 4. SM-USB-DIG Connector
PIN ON J1 SIGNAL DESCRIPTION
1 I2C_SCL I
2
C clock signal (SCL)
2 CTRL/MEAS4 GPIO: Control output or measure input
3 I2C_SDA1 I
2
C data signal (SDA)
4 CTRL/MEAS5 GPIO: Control output or measure input
5 SPI_DOUT1 SPI data output (MOSI)
6 VDUT
Switchable DUT power supply: 3.3 V, 5 V, Hi-Z (disconnected).
Note: When VDUT is Hi-Z, all digital I/Os are Hi-Z as well
7 SPI_CLK SPI clock signal (SCLK)
8 GND Power return (GND)
9 SPI_CS1 SPI chip-select signal (!CS)
10 SPI_DIN1 SPI data input (MISO)
3 EVM Software Setup
This section discusses how to install the EVM software.
3.1 Operating Systems for EVM Software
The EVM software has been tested on the Windows XP
®
and Windows 7
®
operating systems with United
States and European regional settings. The software should also function on other Windows operating
systems.
3.2 EVM Software Installation
The EVM software may be downloaded by following the instructions provided external to this document.
To install the software, locate and extract the file named DAC8775.zip to a specific folder (for example,
C:\DAC8775\) on the hard drive.
Figure 8. DAC8775EVM Installer