参数资料
型号: XRT83L30IV-F
厂商: Exar Corporation
文件页数: 31/78页
文件大小: 0K
描述: IC LIU LH/SH T1/E1 SGL 64TQFP
标准包装: 160
类型: 线路接口装置(LIU)
驱动器/接收器数: 1/1
规程: T1,E1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-TQFP(10x10)
包装: 托盘
其它名称: 1016-1633
XRT83L30IV-F-ND
XRT83L30
34
REV. 1.0.1
SINGLE-CHANNEL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
RECEIVE
For N+1 redundancy, the receivers on the primary cards should be programmed for internal impedance mode.
The receivers on the backup card should be programmed for external impedance mode. Since there is no
external resistor in the circuit, the receivers on the backup card will be high impedance. Select the impedance
for the desired mode of operation, T1/E1/J1. To swap the primary card, set the backup card to internal
impedance mode, then the primary card to external impedance mode. See Figure 19. for a simplified block
diagram of the receive section for a N+1 redundancy scheme.
NOTE: For simplification, the over voltage protection circuitry was omitted.
FIGURE 19. SIMPLIFIED BLOCK DIAGRAM - RECEIVE SECTION FOR N+1 REDUNDANCY
Backplane Interface
Primary Card
XRT83L30
Rx
Line Interface Card
Primary Card
XRT83L30
Rx
Primary Card
XRT83L30
Rx
Backup Card
XRT83L30
Rx
RxTSEL=1, Internal
RxTSEL=1, External
T1/E1 Line
1:1
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