XRT75R12DIB-F Exar Corporation, XRT75R12DIB-F Datasheet - Page 115
XRT75R12DIB-F
Manufacturer Part Number
XRT75R12DIB-F
Description
Peripheral Drivers & Components (PCIs) 12 Channel 3.3V-5V temp -45 to 85C
Manufacturer
Exar Corporation
Datasheet
1.XRT75R12DIB-F.pdf
(133 pages)
Specifications of XRT75R12DIB-F
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Operating Supply Voltage
3.3 V to 5 V
Package / Case
TBGA-420
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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REV. 1.0.3
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.
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.
Figure 59 presents an illustration of the "87-3 Add Pattern" Pointer Adjustment Scenario per Telcordia GR-253-
CORE.
F
8.5.5
8.5.6
IGURE
58. A
87-3 Pattern
87-3 Add
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
N
I
LLUSTRATION OF THE
Initialization
87 Pointer Adjustment Events
T
Repeating 87-3 Pattern (see below)
87-3 C
Pointer Adjustment Events
ONTINUOUS
87-3 Pattern
Measurement Period
111
P
OINTER
NOTE: T ranges from 34ms to 10s (Req)
A
DJUSTMENT
T ranges from 7.5ms to 34ms (Obj)
P
ATTERN
Adjustments
No Pointer
XRT75R12D
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