XRT83SL28ES View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT83SL28ES' PDF : 47 Pages View PDF
xr
REV. 1.0.0
XRT83SL28
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
3.2.6 Receive Interface with N+1 Redundancy
For N+1 redundancy, the receivers on all cards can be programmed for internal impedance. The receivers on
the backup card do not have to be tri-stated. To swap the primary card, close the desired relays. See Figure
Figure 24 for a simplified block diagram of the receive section for an N+1 redundancy scheme.
FIGURE 24. SIMPLIFIED BLOCK DIAGRAM OF THE RECEIVE INTERFACE FOR N+1 REDUNDANCY
Backplane Interface
Primary Card
XRT83SL28
Rx
Internal Impedance
Primary Card
XRT83SL28
Rx
Internal Impedance
Primary Card
XRT83SL28
Rx
Internal Impedance
Backup Card
XRT83SL28
Rx
Internal Impedance
Line Interface Card
1:1
1:1
1:1
E1 Line
E1 Line
E1 Line
29
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