Intel N270, FPC 5084 user manual Serial Ports Interface

FPC 5084 User Manual

2.2Serial Ports Interface

The FPC 5084 has two onboard serial ports, COM1 (RS-232/ 422/ 485) and COM2 (RS-232).

The following table shows you the pin assignments of this connector:

Pin	Signal		Pin	Signal
1	Data Carrier Detect (DCD)		6	Data Set Ready (DSR)
2	Receive Data (RXD)		7	Request To Send (RTS)
3	Transmit Data (TXD)		8	Clear To Send (CTS)
4	Data Terminal Ready (DTR)	9		Ring Indicator (RI)
5	Ground (GND)

In addition, COM1 can be set for RS-232/422/485 by jumper. The jump setting is listed as below:

COM1		JP11		JP12		JP13
RS-232 (default)		3-5, 4-6		3-5, 4-6		1-2
RS-422	1-3, 2-4		1-3, 2-4		3-4, 7-8
RS-485	1-3, 2-4		1-3, 2-4		5-6, 7-8

Hardware Installation 11