Texas Instruments AM438x ePOS EVM, Руководство пользователя, Страница: 22 / 25

Board Connectors
www.ti.com
22 SPRUIF8 – June 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
AM438x ePOS EVM Hardware
8.16 Printer Header – J90
Table 23 lists the pin details of the printer header.
Table 23. Printer Header Pin Details
Pin No. Signal Name Description
1 VBAT Voltage V
BAT
2 V3_3D Voltage 3.3 V
3 VBAT Voltage V
BAT
4 eHRPWM0_A PWM signal 0 – A
5 PRINTER_GPIO3 General-purpose I/O 3
6 eHRPWM0_B PWM signal 0 – B
7 PRINTER_GPIO2 General-purpose I/O 2
8 eHRPWM0_TRIPZONE PWM signal 0 Trip Zone
9 PRINTER_GPIO1 General-purpose I/O 1
10 eHRPWM0_SYNCI PWM 0 Sync
11 PRINTER_GPIO0 General-purpose I/O 0
12 eHRPWM1_A PWM 1 – A
13 DGND Ground
14 eHRPWM1_B PWM 1 – B
15 PRINT_SPI_CLK SPI clock
16 DGND Ground
17 PRINT_SPI_CSn SPI chip select
18 NC NC
19 PRINT_SPI_MOSI SPI master out slave in
20 NC NC
21 PRINT_SPI_MISO SPI master in slave out
22 NC NC
23 DGND Ground
24 NC NC