Signal Definition Of J1 (25-Pin Male Dsub) On Ina220_Test_Board - Texas Instruments INA220 User Manual

System Setup
2.2 Signal Definitions of J1 (25-Pin Male DSUB)
Table 1 lists the different signals connected to J1 on the INA220_Test_Board. This table also identifies
signals connected to pins on J1 that are not used on the INA220_Test_Board.
Table 1. Signal Definition of J1 (25-Pin Male DSUB) on INA220_Test_Board
J1 Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
6
INA220 Evaluation Module
Signal
NC
NC
NC
NC
NC
NC
NC
NC
I2C_SCK
I2C_SDA2
NC
I2C_SCK_ISO I
I2C_SDA_ISO I
NC
NC
NC
V Switched 3V or 5V power. Note that when power is
DUT
switched off, the digital I/O is also switched off.
V
CC
NC
NC
GND Common or ground connection for power
SPI_SCK
SPI_CS1
SPI_DOUT
SPI_DIN1
Copyright © 2009–2010, Texas Instruments Incorporated
INA220 Pin
No connection
No connection
No connection
No connection
No connection
No connection
No connection
No connection
No connection
No connection
No connection
2
C clock signal (SCL) channel 1; can be
disconnected using a switch
2
C data signal (SDA) channel 1; can be
disconnected using a switch
No connection
No connection
No connection
No connection
No connection
No connection
No connection
No connection
No connection
No connection
SBOU079A – July 2009 – Revised February 2010
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