Technologic Systems TS-7400 - Upper Header Pin-Out

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TS-7400/TS-9441 MANUAL

CONNECTORS AND HEADERS

Upper header Pin-Out

Pin # Name Function

1 TDO TS-production reserved

2 TMS TS-production reserved

3 GND Ground

4 TDI TS-production reserved

5 BLAST_BOOT# input, low will hijack CPU SPI bootstrap

6 TCK TS-production reserved

7 UART0_TXD ep9302 UART #0 output (/dev/ttyAM0 in Linux)

8 UART0_RXD ep9302 UART #0 input (/dev/ttyAM0 in Linux)

9 SPI_MISO SPI master-in, slave-out input

10 3.3V 3.3V TS-7400 regulator output (or input, if U6 regulator is

not populated)

11 BLAST_EE_CS# chip-select for SPI boot hijack EEPROM

12 SPI_MOSI SPI master-out, slave in output

13 FLASH_CS# chip-select used for 2 megabyte SPI flash on TS-9441

(used by TS-SPIBOOT boot program)

14 SPI_CLK SPI clock output

15 5V 5V regulated power input/output

16 EXT_RESET# External reset input, low triggers board reset

17 BLAST_PRESENT# Boot hijacker present input

18 GND Ground

19 PORTB_4 CPU connected GPIO pin, 5V tolerant with external

series resistor.

20 GND Ground

21 EN_5V Switching power supply enable input, open-drain, pull

low to disable 5V switcher

22 EP_USB+ EP93xx CPU USB port data signal

23 FIL_VIN Reserved

24 EP_USB- EP93xx CPU USB port data signal

25 PORTB_7 CPU connected GPIO pin, 6.49k pull-down and 1k series

resistors. 5V tolerant.

26 USB_5V USB 5V power