Comtech EF Data CRS-311, Installation And Operation Manual

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CRS-311 1:1 Redundancy Switch Revision 7
Appendix B MN/CRS311.IOM
B–7
B.2.4 CRS-336 – HSSI Connector (HD-50F)
Table B ‐ 7 indicates the pinout for the HD ‐ 50F Mini ‐ D/SCSI ‐ II “HSSI” User Int erface connector:
“J2” on the CRS ‐ 336 TMI.
Table B-7. “J2” HSSI User Data Connector
Pin # (+, -) Signal Function HSSI Signal RS613 Circuit
Circuit
Direction
1, 26 Signal Ground SG 102
2, 27 Receive Timing RT 115 from DCE
3, 28 DCE Available CA 107 from DCE
4, 29 Receive Data RD 104 from DCE
5, 30 N/A N/A N/A N/A
6, 31 Send Timing ST 114 from DCE
7, 32 Signal Ground SG 102
8, 33 DTE Available TA 108/2 to DCE
9, 34 Terminal Timing TT 113 to DCE
10, 35 N/A N/A N/A N/A
11, 36 Send Data SD 103 to DCE
12, 37 N/A N/A N/A N/A
13, 38 Signal Ground SG 102
14,15,17, 18, 39-
43 Reserved (to DCE) not used
16 Tx_Carrier_Off_L
1, 3
CO undefined from DTE
19, 44 Signal Ground SG 102
20 Carrier Detect (lock)
1, 2
CD undefined from DCE
21-24, 46-49 Reserved (to DTE) undefined not used
25, 50 Signal Ground SG 102
Notes :
1. Noted signal function names are non ‐ HSSI defined signals. On Cisco™ routers, there is
no connection to those pins.
2. TTL ‐ output.
3. TTL or RS ‐ 232 (active low) input.