XRT75VL00D datasheet(77/92 Pages) EXAR

부품명	XRT75VL00D

상세설명	E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER

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제조업체	EXAR [Exar Corporation]

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XRT75VL00D

REV. 1.0.3

E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER

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 52.

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.

9.5.7

87-3 Cancel

Figure 53 presents an illustration of the 87-3 Cancel Pattern Pointer Adjustment Scenario per Telcordia GR-

253-CORE.

FIGURE 52. ILLUSTRATION OF THE 87-3 ADD POINTER ADJUSTMENT PATTERN

FIGURE 53. ILLUSTRATION OF 87-3 CANCEL POINTER ADJUSTMENT SCENARIO

43 Pointer Adjustments

Added Pointer Adjustment

No Pointer

Adjustments

86 or 87 Pointer Adjustments

No Pointer

Adjustments

Cancelled

Pointer Adjustment

XRT75VL00D 데이터시트(PDF) 77 Page - Exar Corporation