ADLINK Technology COM Express Express-HLE User Manual page 23

3.3.14 I2C Bus
Signal Pin # Description
I2C_CK B33 General purpose I²C port clock output/input
I2C_DAT B34 General purpose I²C port data I/O line
3.3.15 General Purpose I/O (GPIO)
Signal Pin # Description
GPO[0] A93 General purpose output pins.
GPO[1] B54 General purpose output pins.
GPO[2] B57 General purpose output pins.
GPO[3] B63 General purpose output pins.
GPI[0] A54 General purpose input pins.
Pulled high internally on the module.
GPI[1] A63 General purpose input pins.
Pulled high internally on the module.
GPI[2] A67 General purpose input pins.
Pulled high internally on the module.
GPI[3] A85 General purpose input pins.
Pulled high internally on the module.
3.3.16 Serial Interface Signals
Signal Pin # Description
SER0_TX A98 General purpose serial port transmitter (TTL level output)
SER0_RX A99 General purpose serial port receiver (TTL level input)
SER1_TX A101 General purpose serial port transmitter (TTL level output)
SER1_RX A102 General purpose serial port receiver (TTL level input)
Express-HLE
I/O PU/PD
I/O OD 3.3VSB PU 2k2 3.3VSB
I/O OD 3.3VSB PU 2k2 3.3VSB
I/O PU/PD
O 3.3V
O 3.3V
O 3.3V
O 3.3V
I 3.3V PU 10K 3.3V
I 3.3V PU 10K 3.3V
I 3.3V PU 10K 3.3V
I 3.3V PU 10K 3.3V
I/O PU/PD Comment
O CMOS Power rail tolerance 5V / 12V
I CMOS Power rail tolerance 5V / 12V
O CMOS Power rail tolerance 5V / 12V
I CMOS Power rail tolerance 5V / 12V
Comment
Comment
After hardware RESET
output low
After hardware RESET
output low
After hardware RESET
output low
After hardware RESET
output low
Page 23