Texas Instruments AM438x ePOS EVM, User Manual, Page: 14 / 25

Board Connectors
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14 SPRUIF8 – June 2017
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AM438x ePOS EVM Hardware
8.3 Touch Connector – J45
Table 8 lists the pin details of the LCD capacitive touchscreen connector.
Table 8. LCD Capacitive Touchscreen Pin Details
Pin No. Direction Description
1 NC NC
2 NC NC
3 TSC_INTn Touchscreen interrupt
4 GP_I2C_SDA I
2
C data
5 GP_I2C_SCK I
2
C clock
6 SYS_RESETn Reset
7 GND Ground
8 VCC Power
8.4 Ethernet – J8
Table 9 lists the pin details of the AM438x 10/100 Ethernet connector.
Table 9. AM438x 10/100 Ethernet Pin Details
Pin No. Signal Name Description
1 ETHER1_RDP Data 1 RX positive
2 ETHER1_RDN Data 1 RX negative
3 VCC Voltage
4 VCC Voltage
5 ETHER1_TDP Data 1 TX positive
6 ETHER1_TDP Data 1 TX negative
7 NC NC
8 DGND Ground
D1 LINK LED ANODE Anode of link LED
D2 LINK LED CATHODE Cathode of link LED
D3 SPEED LED ANODE Anode of speed LED
D4 SPEED LED CATHODE Cathode of speed LED
SHLD1 DGND Ground
SHLD2 DGND Ground
8.5 USB
8.5.1 Micro AB Connector – J23
Table 10 lists pin details of the AM438x micro AB connector.
Table 10. AM438x Micro AB Connector – USB Port 0 Pin Details
Pin No. Signal Name Description
1 VUSB_VBUS0 USB0 bus voltage
2 USB0_CONN_DM USB0 data minus
3 USB0_CONN_DP USB0 data plus
4 USB0_ID USB0 identification
5 DGND Ground