PM73121ꢀAAL1gator II
Data Sheet
PMC-Sierra, Inc.
PMC-980620
,VVXHꢀꢁ
AAL1 SAR Processor
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.
GFC/VPI
VPI
VPI
VCI
GFC/VPI
VPI
VPI
VCI
VCI
VCI
VCI
PTI
HEC
CLP
VCI
PTI
HEC
CLP
CSI
SN
SNP
CSI
SN
SNP
Payload 1
Payload 2
Payload 1
Payload 2
.
.
.
.
.
.
Payload 42
Payload 47
Cell without Pointer
Partial Cell without Pointer
Figure 9. Examples of Unstructured Cell Formats
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).
ꢀꢅ
PMC [ PMC-SIERRA, INC ]
