參數(shù)資料
型號: XRT83SH314IB
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: 14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
中文描述: DATACOM, PCM TRANSCEIVER, PBGA304
封裝: 31 X 31 MM, 1.27 MM PITCH, PLASTIC, BGA-304
文件頁數(shù): 42/101頁
文件大小: 656K
代理商: XRT83SH314IB
XRT83SH314
38
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.4
4.3.6
Receive Interface with N+1 Redundancy
For N+1 redundancy, the receivers on the primary cards should be programmed for internal impedance. The
receivers on the backup card should be programmed for "High" impedance mode. To swap the primary card,
set the backup card to internal impedance, then the primary card to "High" impedance. See
Figure 30
for a
simplified block diagram of the receive section for a N+1 redundancy scheme.
F
IGURE
30. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
R
ECEIVE
I
NTERFACE
FOR
N+1 R
EDUNDANCY
Backplane Interface
Primary Card
XRT83SH314
Rx
Line Interface Card
Primary Card
Rx
Primary Card
Rx
Backup Card
Rx
Internal
Impedence
T1/E1 Line
T1/E1 Line
T1/E1 Line
1:1
1:1
1:1
XRT83SH314
XRT83SH314
XRT83SH314
Internal
Impedence
Internal
Impedence
"High"
Impedence
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