CCIE Practical Studies, Volume I

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Asynchronous Serial Ports

Figure D-7 shows the RJ-45 breakout cable with pinouts for the 68-pin SCSI port and the RJ-45 serial port. Table D-14 contains the pinout for the RJ-45 end, and Table D-15 contains the pinout for the 68-pin SCSI type connector.

Figure D-7. Asynchronous Serial Interface Breakout Cable Assembly

Table D-14. Asynchronous Breakout Cable Pinout (8-Pin RJ-45)

8 Pin RJ-45 Signal Direction
1 CTS
2 DSR/DCD
3 RXD
4 RXD/GND -
5 TXD/GND -
6 TXD
7 DTR
8 RTS

NOTE

The Asynchronous breakout cable is equivalent to a console or auxiliary port with a roll-over RJ-45 cable attached. See Table D-17 for asynchronous device connection options.

Table D-15. Asynchronous-Line Cable Pinout (68-Pin SCSI)

RJ-45 Plug Pin Signal 68-Pin SCSI (J1)
1 1 CTS 39
2 DSR 5
3 RXD 38
4 RXD GND 4
5 TXD GND 37
6 TXD 3
7 DTR 36
8 RTS 2
2 1 CTS 43
2 DSR 9
3 RXD 42
4 RXD GND 8
5 TXD GND 41
6 TXD 7
7 DTR 40
8 RTS 6
3 1 CTS 47
2 DSR 13
3 RXD 46
4 RXD GND 12
5 TXD GND 45
6 TXD 11
7 DTR 44
8 RTS 10
4 1 CTS 51
2 DSR 17
3 RXD 50
4 RXD GND 16
5 TXD GND 49
6 TXD 15
7 DTR 48
8 RTS 14
5 1 CTS 55
2 DSR 21
3 RXD 54
4 RXD GND 20
5 TXD GND 53
6 TXD 19
7 DTR 52
8 RTS 18
6 1 CTS 59
2 DSR 25
3 RXD 58
4 RXD GND 24
5 TXD GND 57
6 TXD 23
7 DTR 56
8 RTS 22
7 1 CTS 63
2 DSR 29
3 RXD 62
4 RXD GND 28
5 TXD GND 61
6 TXD 27
7 DTR 60
8 RTS 26
8 1 CTS 67
2 DSR 33
3 RXD 66
4 RXD GND 32
5 TXD GND 65
6 TXD 31
7 DTR 64
8 RTS 30
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