參數(shù)資料
型號(hào): XRT75R12DIB-L
廠商: Exar Corporation
文件頁(yè)數(shù): 19/133頁(yè)
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 12CH 420TBGA
標(biāo)準(zhǔn)包裝: 40
類型: 線路接口裝置(LIU)
驅(qū)動(dòng)器/接收器數(shù): 12/12
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 420-LBGA 裸露焊盤
供應(yīng)商設(shè)備封裝: 420-TBGA(35x35)
包裝: 托盤
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XRT75R12D
111
REV. 1.0.3
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
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 "Phase Transient - Pointer Adjustment" scenario must NOT exceed
1.2UI-pp.
8.5.5
87-3 Pattern
Figure 58 presents an illustration of the "87-3 Continuous Pattern" Pointer Adjustment Scenario per Telcordia
GR-253-CORE.
Telcordia GR-253-CORE defines an "87-3 Continuous" Pointer Adjustment pattern, as a repeating sequence of
90 pointer adjustment events. Within this 90 pointer adjustment event, 87 pointer adjustments are actually
executed. The remaining 3 pointer adjustments are never executed. The spacing between individual pointer
adjustment events (within this scenario) can range from 7.5ms to 10seconds.
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 Continuous" pattern of Pointer Adjustments, must not exceed
1.0UI-pp.
8.5.6
87-3 Add
Figure 59 presents an illustration of the "87-3 Add Pattern" Pointer Adjustment Scenario per Telcordia GR-253-
CORE.
FIGURE 58. AN ILLUSTRATION OF THE 87-3 CONTINUOUS POINTER ADJUSTMENT PATTERN
Initialization
Measurement Period
Repeating 87-3 Pattern (see below)
Pointer Adjustment Events
87-3 Pattern
87 Pointer Adjustment Events
No Pointer
Adjustments
T
NOTE: T ranges from 34ms to 10s (Req)
T ranges from 7.5ms to 34ms (Obj)
相關(guān)PDF資料
PDF描述
XRT75R12IB-L IC LIU E3/DS3/STS-1 12CH 420TBGA
XRT75VL00DIV IC LIU E3/DS3/STS-1 1CH 52TQFP
XRT75VL00IV-F IC LIU E3/DS3/STS-1 1CH 52TQFP
XRT79L71IB-F IC LIU/FRAMER DS3/E3 1CH 208BGA
XRT81L27IV-F IC LIU EI 7CH 3.3V 128TQFP
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