XRT75R12DIB-F Exar Corporation, XRT75R12DIB-F Datasheet - Page 116

• Manufacturer Part Number: XRT75R12DIB-F
• Description: Peripheral Drivers & Components (PCIs) 12 Channel 3.3V-5V temp -45 to 85C
• Manufacturer: Exar Corporation

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

XRT75R12D
TWELVE CHANNEL 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
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.
Figure 60 presents an illustration of the 87-3 Cancel Pattern Pointer Adjustment Scenario per Telcordia GR-
253-CORE.
F
F
8.5.7
IGURE
IGURE
59. I
60. I
87-3 Cancel
LLUSTRATION OF THE
LLUSTRATION OF
43 Pointer Adjustments
87-3 C
T
T
87-3 A
ANCEL
86 or 87 Pointer Adjustments
DD
Added Pointer Adjustment
P
P
OINTER
OINTER
t
A
A
112
DJUSTMENT
DJUSTMENT
43 Pointer Adjustments
S
P
CENARIO
ATTERN
Pointer Adjustment
Cancelled
Adjustments
Adjustments
No Pointer
No Pointer
Figure
59.
REV. 1.0.3