cn8236 Mindspeed Technologies, cn8236 Datasheet - Page 88
cn8236
Manufacturer Part Number
cn8236
Description
Atm Servicesar Plus With Xbr Traffic Management
Manufacturer
Mindspeed Technologies
Datasheet
1.CN8236.pdf
(443 pages)
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4.0 Segmentation Coprocessor
4.2 Segmentation Functional Description
4-10
Table 4-3. AAL3/4 SAR-PDU Field Generation
Table 4-4. Coding of Segment Type (ST) Field
Each SAR-PDU field is generated as described in
Table 4-4
Field
Segment Type
MID
CRC
SN
ST
LI
Mindspeed Technologies
BOM
COM
EOM
SSM
shows the settings for the ST (Segment Type) field.
# Bits
10
10
2
4
6
BOM value for the first cell generated from the buffer with the
BOM option in the buffer descriptor set.
EOM value for the last cell generated from the buffer with the
EOM option in the buffer descriptor set.
SSM value for the cell generated from the buffer with both
BOM and EOM options in the buffer descriptor set, and the
buffer descriptor LENGTH field 44.
COM value for all other generated cells. (See the next table for
Binary values.)
Read from the SN field in the SEG VCC structure. The SN field
is incremented modulo 16 after each use.
Read from the MID field in the SEG VCC structure.
Generated by the segmentation coprocessor in an internal
byte length counter.
Generated as all zeros. The CRC field can be overwritten with
the CRC-10 generator before transmission by setting the
CRC_10 option in the SEG buffer descriptor.
Encoding
ATM ServiceSAR Plus with xBR Traffic Management
10
00
01
11
™
Beginning of Message
Continuation of Message
End of Message
Single Segment Message
Function
Table
Usage
4-3.
28236-DSH-001-B
CN8236
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