Avalue Technology ERX-Q77, User Manual, Page: 46 / 92

ERX-Q77
User’s Manual
46 ERX-Q77
User’s Manual
2.8.12 Serial Port connectors (COM3, COM4, COM5)
This connector is for a serial (COM) port. Connect the serial port module cable to this
connector, then install the module to a slot opening at the back of the system chassis.
COM3
1. COM_C-DCD3#
3. COM_C-TXD3
5. GND
7. COM_C-RTS3#
9. RI3xPOWERxJMP 2. COM_C-RXD3
4. COM_C-DTR3#
6. COM_C-DSR3#
8. COM_C-CTS3#
COM4
1. COM_C-DCD4#
3. COM_C-TXD4
5. GND
7. COM_C-RTS4#
9. COM_C-RI4# 2. COM_C-RXD4
4. COM_C-DTR4#
6. COM_C-DSR4#
8. COM_C-CTS4#
COM5
1. COM_C-DCD5#
3. COM_C-TXD5
5. GND
7. COM_C-RTS5#
9. COM_C-RI5# 2. COM_C-RXD5
4. COM_C-DTR5#
6. COM_C-DSR5#
8. COM_C-CTS5#
2.8.13 Digital IO Connector (DIO1)
This connector is for 8-bit General purpose I/O function.
DIO1
1. DIO_GP0
3. DIO_GP1
5. DIO_GP2
7. DIO_GP3
9. SMB_CLK_RESUME
11. GND 2. DIO_GP4
4. DIO_GP5
6. DIO_GP6
8. DIO_GP7
10. SMB_DATA_RESUME
12. +V5_DUAL