REV. 1.0.7 5.2.3 Receive Interface with 1:1 and 1+1 Redundancy The receivers on " />
參數(shù)資料
型號: XRT83SH38IB-F
廠商: Exar Corporation
文件頁數(shù): 35/78頁
文件大小: 0K
描述: IC LIU SH T1/E1/J1 8CH 225BGA
標準包裝: 84
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 8/8
規(guī)程: T1,E1,J1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 225-BGA
供應(yīng)商設(shè)備封裝: 225-BGA(19x19)
包裝: 托盤
XRT83SH38
37
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.7
5.2.3
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 28. for a simplified block
diagram of the receive section for a 1:1 redundancy scheme.
FIGURE 28. SIMPLIFIED BLOCK DIAGRAM OF THE RECEIVE INTERFACE FOR 1:1 AND 1+1 REDUNDANCY
"High" Impedence
Internal Impedence
Backplane Interface
Primary Card
Backup Card
XRT83SH38
Rx
T1/E1 Line
Rx
1:1
XRT83SH38
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