參數(shù)資料
型號(hào): XRT83SL28IV
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
中文描述: DATACOM, PCM TRANSCEIVER, PQFP144
封裝: 20 X 20 MM, 1.40 MM HEIGHT, TQFP-144
文件頁(yè)數(shù): 31/47頁(yè)
文件大?。?/td> 377K
代理商: XRT83SL28IV
xr
REV. 1.0.0
XRT83SL28
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
29
3.2.6
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.
F
IGURE
24. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
R
ECEIVE
I
NTERFACE
FOR
N+1 R
EDUNDANCY
Receive Interface with N+1 Redundancy
Backplane Interface
Primary Card
XRT83SL28
Rx
Line Interface Card
Primary Card
Rx
Primary Card
Rx
Backup Card
Rx
Internal Impedance
E1 Line
E1 Line
E1 Line
1:1
1:1
1:1
XRT83SL28
XRT83SL28
XRT83SL28
Internal Impedance
Internal Impedance
Internal Impedance
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