参数资料
型号: XRT83SL30IVTR-F
厂商: Exar Corporation
文件页数: 27/76页
文件大小: 0K
描述: IC LIU T1/E1/J1 SGL 64TQFP
标准包装: 1,000
类型: 线路接口装置(LIU)
驱动器/接收器数: 1/1
规程: T1,E1,J1
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: 带卷 (TR)
XRT83SL30
30
REV. 1.0.1
SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
RECEIVE 1:1 & 1+1 REDUNDANCY
For 1:1 and 1+1 redundancy, the receivers on the primary card 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. 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 mode, then the primary card to External Impedance mode. See Figure 15 for a
simplified block diagram of the receive section for a 1:1 and 1+1 redundancy scheme.
NOTE: For simplification, the over voltage protection circuitry was omitted.
FIGURE 14. SIMPLIFIED BLOCK DIAGRAM OF THE TRANSMIT SECTION FOR 1:1 & 1+1 REDUNDANCY
T1/E1 Line
Backplane Interface
Primary Card
Backup Card
XRT83SL30
Tx
Line Interface Card
0.68
F
0.68
F
TxTSEL=1, Internal
1:2
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