CN8237EBGB Mindspeed Technologies, CN8237EBGB Datasheet - Page 116

• Manufacturer Part Number: CN8237EBGB
• Description: ATM SAR 622Mbps 3.3V ABR/CBR/GFR/UBR/VBR 456-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of CN8237EBGB

• Package: 456BGA
• Traffic Class: ABR|CBR|GFR|UBR|VBR
• Utopia Type: Level 1|Level 2
• Host Interface: PCI
• Maximum Data Rate: 622 Mbps
• Typical Operating Supply Voltage: 3.3 V
• Minimum Operating Supply Voltage: 3.135 V

5.0 Reassembly Coprocessor
5.3 CPCS-PDU Processing
Figure 5-6. CPCS-PDU Reassembly
5-8
CPCS-PDU
(For a
Specific VCC)
ATM Cells
(Hdr)
BOM Cell
(Payload)
in ANSI T1.635 or reassembly into a transparent AAL0 PDU. The exact process
is governed by the AAL type described in detail in the subsections below.
SETUP
Each active reassembly VCC must have a corresponding entry in the reassembly
VCC table to describe its state. At channel setup time—either during system
initialization for Permanent Virtual Connections (PVCs), or dynamically for
Switched Virtual Connections (SVCs)—the host allocates a reassembly VCC
table entry and configures the VCC according to its provisioned or negotiated
characteristics. This includes the AAL in use, its assigned buffer pools and
allocation priority, as well as the associated segmentation VCC index
(SEG_VCC_INDEX) for full duplex connections.
OPERATION
Once the reassembly process is activated, this RSM VCC table entry will be used
to track the current state of the connection and direct the CN8237 to perform
specific functions as described throughout this chapter.
Figure 5-6
Mindspeed Technologies
illustrates the basic process function.
(Hdr)
COM Cells . . .
ATM OC-12 ServiceSAR Plus with xBR Traffic Management
(Payload)
™
. . .
. . .
(Hdr)
EOM Cell
(Payload)
28237-DSH-001-C
CN8237
8237_043