Eurotech Appliances PXA255 manual 24

VIPER Technical Manual Detailed hardware description

GPIO
No	AF Signal name		Dir	Active	Sleep	Function	See section…
34	1	RXD1	Input	NA	Input	COM1 Receive Data
35	1	CTS1	Input	NA	Input	COM1 Clear To Send
36	1	DCD1	Input	NA	Input	COM1 Data Carrier
						Detect
37	1	DSR1	Input	NA	Input	COM1 Data Sender
						Ready
38	1	RI1	Input	NA	Input	COM1 Ring Indicator
39	2	TXD1	Output	NA	0	COM1 Transmit Data
40	2	DTR1	Output	NA	0	COM1 Data Terminal	Serial323H	COMs ports
						Ready
							(page 64324H) and 325HPL4 –
41	2	RTS1	Output	NA	0	COM1 Request To	COMS ports (page 89326H).
						Send
42	1	RXD2	Input	NA	Input	COM2 Receive Data
43	2	TXD2	Output	NA	0	COM2 Transmit Data
44	1	CTS2	Input	NA	Input	COM2 Clear To Send
45	2	RTS2	Output	NA	0	COM2 Request To
						Send
46	2	RXD3	Input	NA	Input	COM3 Receive Data
47	1	TXD3	Output	NA	0	COM3 Transmit Data
48	2	CB_POE	Output	Low	1	Socket 0 & 1 Output
						Enable
49	2	CB_PWE	Output	Low	1	Socket 0 & 1 Write
						Enable
50	2	CB_PIOR	Output	Low	1	Socket 0 & 1 I/O Read		-
51	2	CB_PIOW	Output	Low	1	Socket 0 & 1 I/O Write
52	2	CB_PCE1	Output	Low	1	Socket 0 & 1 Low Byte
						Enable
53	2	CB_PCE2	Output	Low	1	Socket 0 & 1 High
						Byte Enable
54	2	CB_PKTSEL	Output	NA	1	PSKTSEL 0 = Socket
						0 Select / 1 = Socket 1		-
						Select
55 2 CB_PREG			Output	Low	1	PREG		-
56	1	CB_PWAIT	Input	Low	Input	PWAIT		-
57	1	CB_PIOIS16	Input	Low	Input	IOIS16

continued…

© 2007 Eurotech Ltd Issue E 24