cn8236 Mindspeed Technologies, cn8236 Datasheet - Page 157

• Manufacturer Part Number: cn8236
• Description: Atm Servicesar Plus With Xbr Traffic Management
• Manufacturer: Mindspeed Technologies

CN8236
ATM ServiceSAR Plus with xBR Traffic Management
28236-DSH-001-B
Table 5-15. AAL3/4 Head VCC Table Descriptions (2 of 3)
MID_BITS
CRC10_EN
LI_EN
ST_EN
SN_EN
CPI_EN
BAT_EN
BAH_EN
ER_EFCI
VCC_INDEX_BASE
STAT
Field Name
Number of significant bits for MID field. Defines the limit of MID values allowed for the AAL3/4
Virtual Connection. If the MID_BITS subfield is non-0 and the AAL_TYPE is AAL3/4, CPCS_MID
multiplexing processing is enabled. A MID of 0 is valid only if MID0 is a logic high. MID_BITS is
decoded as follows:
If set high, enable AAL3/4 crc10 field checking and error counting.
If set high, enable AAL3/4 LI field checking and error counting.
If set high, enable AAL3/4 ST field checking and error counting.
If set high, enable AAL3/4 SN field checking and error counting.
If set high, enable AAL3/4 CPI field checking.
If set high, enable AAL3/4 BASIZE Length checking. If low, LENGTH > BASIZE check is performed.
If set high, enable AAL3/4 BASIZE < 37 checking.
ER EFCI bit of the previous data cell.
Pointer to the first VCC table entry for this VCC with MID value = 0. All multiplexed MIDs on this
channel are contained in a contiguous block of VCC table entries.
Status queue pool number.
Mindspeed Technologies
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
MID_BITS
Description/Function
MID processing disabled
0 / 1-1
0 / 1-3
0 / 1-7
0 / 1-15
0 / 1-31
0 / 1-63
0 / 1-127
0 / 1-255
0 / 1-511
0 / 1-1023
Reserved
Reserved
Reserved
Reserved
Reserved
Range of MID values
™
5.7 Reassembly Control and Data Structures
5.0 Reassembly Coprocessor
5-47