参数资料
型号: XRT75R12DIB-L
厂商: Exar Corporation
文件页数: 20/133页
文件大小: 0K
描述: IC LIU E3/DS3/STS-1 12CH 420TBGA
标准包装: 40
类型: 线路接口装置(LIU)
驱动器/接收器数: 12/12
规程: DS3,E3,STS-1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 420-LBGA 裸露焊盘
供应商设备封装: 420-TBGA(35x35)
包装: 托盘
XRT75R12D
112
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
REV. 1.0.3
Telcordia GR-253-CORE defines an "87-3 Add" Pointer Adjustment, as the "87-3 Continuous" Pointer
Adjustment pattern, with an additional pointer adjustment inserted, as shown above in Figure 59.
Telcordia GR-253-CORE mandates that the Intrinsic Jitter, within the DS3 signal that is de-mapped from a
SONET signal, which is experiencing the "87-3 Add" pattern of Pointer Adjustments, must not exceed 1.3UI-
pp.
8.5.7
87-3 Cancel
Figure 60 presents an illustration of the 87-3 Cancel Pattern Pointer Adjustment Scenario per Telcordia GR-
253-CORE.
FIGURE 59. ILLUSTRATION OF THE 87-3 ADD POINTER ADJUSTMENT PATTERN
FIGURE 60. ILLUSTRATION OF 87-3 CANCEL POINTER ADJUSTMENT SCENARIO
43 Pointer Adjustments
Added Pointer Adjustment
No Pointer
Adjustments
T
t
86 or 87 Pointer Adjustments
No Pointer
Adjustments
T
Cancelled
Pointer Adjustment
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