ADLINK Technology COM Express Express-CFR, User Manual

Page: 28 / 108

22
Pinouts and Signal Descriptions
3.3.15. General Purpose I/O (GPIO)
Signal Pin # Description I/O PU/PD Comment
GPO[0] A93 General purpose output pins. O 3.3V PD 10K 3.3V After hardware
RESET output low
GPO[1] B54 General purpose output pins. O 3.3V PD 10K 3.3V
After hardware
RESET output low
GPO[2] B57 General purpose output pins. O 3.3V PD 10K 3.3V After hardware
RESET output low
GPO[3] B63 General purpose output pins. O 3.3V PD 10K 3.3V After hardware
RESET output low
GPI[0] A54 General purpose input pins.
Pulled high internally on the module.
I 3.3V PU 10K 3.3V
GPI[1] A63 General purpose input pins.
Pulled high internally on the module.
I 3.3V PU 10K 3.3V
GPI[2] A67 General purpose input pins.
Pulled high internally on the module.
I 3.3V PU 10K 3.3V
GPI[3] A85 General purpose input pins.
Pulled high internally on the module.
I 3.3V PU 10K 3.3V
3.3.16. Serial Interface Signals
Signal Pin # Description I/O PU/PD Comment
SER0_TX A98 General purpose serial port transmitter (TTL level
output)
O CMOS Power rail tolerance
5V, 12V
There shall be PD on
carrier board
SER0_RX A99 General purpose serial port receiver (TTL level
input)
I CMOS PU 47K
3.3V Power rail tolerance
5V, 12V
SER1_TX A101 General purpose serial port transmitter (TTL level
output)
O CMOS Power rail tolerance
5V, 12V
There shall be PD on
carrier board
SER1_RX A102 General purpose serial port receiver (TTL level
input)
I CMOS PU 47K
3.3V Power rail tolerance
5V, 12V