Texas Instruments PGA309EVM-USB 用户手册
System Setup
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2.4
PGA309_Test_Board: Signal Definitions and Pinouts
This section provides the signal definitions for the PGA309_Test_Board.
2.4.1
J1 (25-Pin Male DSUB)
shows the different signals connected to J1 on the PGA309_Test_Board. This table also identifies
signals connected to pins on J1 that are not used on the PGA309_Test_Board.
Table 2. J1 Pinout (25-Pin Male DSUB)
Pin on J1
Signal
Used on This EVM
PGA309 Pin
1
DAC A
No
2
DAC B
No
3
DAC C
No
4
DAC D
No
5
ADS1+
No
6
ADS1-
No
7
ADS2+
No
8
ADS2–
No
9
I2C_SCK
No
10
I2C_SDA2
No
11
ONE_WIRE
No
12
I2C_SCK_ISO
Yes
SCL
13
I2C_SDA_ISO
Yes
SDA
14
XTR_LOOP+
No
15
XTR_LOOP–
No
16
INA–
No
17
V
DUT
Yes
V
S
18
V
CC
No
19
+15v
No
20
–15v
No
21
GND
Yes
GND
22
SPI_SCK
No
23
SPI_CS1
No
24
SPI_DOUT
No
25
SPI_DIN1
No
14
PGA309EVM-USB
SBOU084 – February 2010
Copyright © 2010, Texas Instruments Incorporated