Datasheet

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UFI HSSI Port Pin Assignments
Table C-22 lists the UFI HSSI pin assignments at the DB-50 connector on the card.
Table C-22 UFI HSSI Pin Assignments
The UFI-HSSI interface is native DCE. The interface pin assignment is done in such a way that the
UFI interface can be connected to the HSSI interface of a Cisco-Router, which is a native DTE, using
a straight pin-to-pin HSSI standard cable attached to a UFI back card or a Cisco Router in either DTE
or DCE modes.
A UFI card in DCE mode can be connected to any DTE interface using the same standard Cisco
cable.
Pin No. Name Source Direction Description
1/26 SG Both — Signal Ground
2/27 RT DCE Output Receive Timing
3/28 CA DCE Output DCE Available
4/29 RD DCE Output Receive Data
5/30 LC DTE Output DCE loop Request
6/31 ST DCE Output Send Timing
7/32 SG Both — Signal Ground
8/33 TA DTE Input DTE Available
9/34 TT DCE Input Terminal Timing
10/35 LA DTE Input Loopback Circuit A
11/36 SD DTE Input Send Data
12/37 LB DTE Input Loopback Circuit B
13/38 SG Both — Signal Ground
14/39 DT DTE Input Send Timing in DTE
15 to 18 — DCE Output Undefined: to DCE
19/44 SG Both — Signal Ground
20 to 23 — DTE Input Undefined: from DCE
24/49 TM DTE Output Test Mode
25/50 SG Both — Signal Ground