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PM73121 Datasheet(PDF) 33 Page - PMC-Sierra, Inc

Part # PM73121
Description  AAL1 Segmentation And Reassembly Processor
PDF  223 Pages
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Manufacturer  PMC [PMC-Sierra, Inc]
Direct Link  http://www.pmc-sierra.com
Logo PMC - PMC-Sierra, Inc

PM73121 Datasheet(HTML) 33 Page - PMC-Sierra, Inc

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PM73121 AAL1gator II
PMC-Sierra, Inc.
PMC-980620
,VVXH
AAL1 SAR Processor
Data Sheet
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2.1.2
Unstructured Cell Formats
Figure 9 shows two unstructured cell formats. In the partially filled cell, the partially filled level
has been set to 42 payload bytes.
2.2
Circuit Interface Features
•
Provides a convenient interface to all of the following line circuit types:
•
Up to eight T1 framers (PMC-Sierra part number PM4341A T1XC or Base-2™ part
number UGA-360).
•
Up to eight E1 framers (PMC part number PM6341 E1XC or Base-2 part number
UGA-510).
•
Up to two T1 PMC quad framers (PMC part number PM4344 TQUAD).
•
Up to two E1 PMC quad framers (PMC part number PM6344 EQUAD).
•
One E3 Framer (EAC-030-X)-compatible device (clear channel).
•
Supports the following VCs:
•
Up to 256 VCs for channelized T1/E1 (Up to 32 VCs per line for E1, up to 24 VCs per
line for T1).
•
Up to eight VCs for multiple-line unstructured data format (UDF-ML mode).
•
One VC for DS3.
•
One VC for E3.
•
Compatible with the ATM Forum Circuit Emulation Service (CES) standard (refer to
Appendix B, “References”, on page 203).
Figure 9.
Examples of Unstructured Cell Formats
GFC/VPI
VPI
VPI
VCI
VCI
VCI
PTI
CLP
HEC
CSI
SN
SNP
Payload 1
Payload 2
Payload 47
.
.
.
Cell without Pointer
GFC/VPI
VPI
VPI
VCI
VCI
VCI
PTI
CLP
HEC
CSI
SN
SNP
Payload 1
Payload 2
Partial Cell without Pointer
Payload 42
.
.
.



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