參數(shù)資料
型號: XRT86VL3x
廠商: Exar Corporation
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 13/153頁
文件大?。?/td> 1316K
代理商: XRT86VL3X
XRT86VL3X
6
REV. 1.2.2
T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
1.2.5
Receive Interface with 1:1 and 1+1 Redundancy
The receivers on the backup card should be programmed for "High" impedance. Since there is no external
resistor in the circuit, the receivers on the backup card will not load down the line interface. This key design
feature eliminates the need for relays and provides one bill of materials for all interface modes of operation.
Select the impedance for the desired mode of operation, T1/E1/J1. To swap the primary card, set the backup
card to internal impedance, then the primary card to "High" impedance. See
Figure 5
. for a simplified block
diagram of the receive section for a 1:1 redundancy scheme.
F
IGURE
5. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
R
ECEIVE
I
NTERFACE
FOR
1:1
AND
1+1 R
EDUNDANCY
"High" Impedence
Internal Impedence
Backplane Interface
Primary Card
Backup Card
XRT86VL3x
Rx
T1/E1 Line
Rx
1:1
1:1
XRT86VL3x
相關(guān)PDF資料
PDF描述
XRT86VL3X_07 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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