Texas Instruments AMC7834, User Manual, Page: 5 / 32

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AMC7834EVM Hardware Setup
5 SLAU608B – December 2014 – Revised May 2016
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AMC7834 Evaluation Module
2.2 Signal Definitions of J4 (20-Pin Male Connector Socket)
The AMC7834EVM includes a 20-pin connector socket used to communicate between the EVM and the
SDM-USB-DIG platform. The pin out of the J4 connector is shown in
Table 3 .
Table 3. J4 Signal Definition
Pin on J4 Signal Description
1 SCL I
2
C clock signal (SCL)
2 DIG_GPIO2 GPIO – control output or measure input
3 DIG_GPIO0 GPIO – control output or measure input
4 DIG_GPIO3 GPIO – control output or measure input
5 SDA I
2
C data signal (SDA)
6 DIG_GPIO4 GPIO – control output or measure input
7 DIG_GPIO1 GPIO – Control Output or Measure Input
8 DIG_GPIO5 GPIO – control output or measure input
9 MOSI SPI data output (MOSI)
10 DIG_GPIO6 GPIO – control output or measure input
11 VDUT Switchable DUT power supply: +3.3 V, +5 V, Hi-Z
(disconnected).
Note: When VDUT is Hi-Z all digital I/O are
Hi-Z as well.
12 DIG_GPIO7 GPIO – control output or measure input
13 SCLK SPI clock signal (SCLK)
14 DIG_GPIO8 GPIO – control output or measure input
15 GND Power return (GND)
16 DIG_GPIO9 GPIO – control output or measure input
17 CS SPI chip select signal (CS)
18 DIG_GPIO10 GPIO – control output or measure input
19 MISO SPI data input (MISO)
20 DIG_GPIO11 GPIO – control output or measure input