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VIPER Technical Manual Detailed hardware description
© 2007 Eurotech Ltd Issue E 24
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
Ready
41 2 RTS1 Output NA 0 COM1 Request To
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
323HSerial COMs ports
(page
324H64) and 325HPL4 –
COMS ports
(page 326H89).
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
…