Texas Instruments AM438x ePOS EVM, User Manual, Page: 23 / 25

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23 SPRUIF8 – June 2017
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AM438x ePOS EVM Hardware
8.17 SPI Headers
8.17.1 SPI Header 1 – J31
Table 24 lists the pin details of SPI header 1.
Table 24. SPI - Header 1 Pin Details
Pin No. Signal Name Description
1 V3_3D 3.3-V supply
2 DGND Ground
3 AM438X_SPI0_SCLK SPI0 clock
4 AM438X_SPI0_DIN SPI0 data in
5 AM438X_SPI0_DOUT SPI0 data out
6 AM438X_SPI0_CS0 SPI0 chip select
7 DGND Ground
8 NC NC
8.17.2 SPI Header 2 – J30
Table 25 lists the pin details of SPI header 2.
Table 25. SPI - Header 2 Pin Details
Pin No. Signal Name Description
1 V3_3D 3.3-V supply
2 DGND Ground
3 AM438X_SPI1_SCLK SPI1 clock
4 AM438X_SPI1_D1 SPI1 D1
5 AM438X_SPI1_D0 SPI1_D0
6 AM438X_SPI1_CS0n SPI1 chip select
7 DGND Ground
8 AM438X_STATUS_LED1 Status LED1
8.18 I2C Header – J39
Table 26 lists the pin details of the I2C header.
Table 26. I2C - Header Pin Details
Pin No. Signal Name Description
1 PWRMON_I2CSCL I
2
C clock
2 PWRMON_I2CSDA I
2
C data
3 DGND Ground
4 PM_ALERT Alert
5 NC NC