RS8234EBGC Mindspeed Technologies, RS8234EBGC Datasheet - Page 149

• Manufacturer Part Number: RS8234EBGC
• Description: RS8234EBGC ATM XBR SAR
• Manufacturer: Mindspeed Technologies

Table 5-16. AAL3/4 Head VCC Table Entry Format
RS8234
ATM ServiceSAR Plus with xBR Traffic Management
28234-DSH-001-B
Table 5-17. AAL3/4 Head VCC Table Descriptions (1 of 3)
Word 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
10
11
VC_EN
AAL_TYPE
FF_DSC
PM_INDEX
AAL_EN
MID0
0
1
2
3
4
5
6
7
8
9
5.7.2.2 AAL3/4 Head
Field Name
VCC Table Entry
MID_BITS
Enables the VCC table entry. If disabled, the cell is discarded.
When VC_EN is a logic high, configure channel to process specific AAL; otherwise, when VC_EN is a
logic low, a value of “11” will cause the CELL_DSC_CNT counter not to be incremented.
00 - AAL5
01 - AAL0
10 - AAL3/4
11 - Reserved
FIFO Full Discard. When a logic high and RSM_CTRL1(OAM_QU_EN) is a logic low, OAM cells will
be discarded when the incoming DMA FIFO is almost full.
Pointer to a PM-OAM processing word. Index with reference to top of VPI Index Table. Used by the
OAM cells detected on AAL3/4 channels.
Same as AAL_EN field in standard RSM VCC entry. Used by OAM cells detected on AAL3/4 channels.
When logic high, allow a MID value of zero; otherwise, zero is invalid.
SEG_VCC_INDEX
Reserved
BOM_SSM_ERR
CRC10_ERR
Reserved
Reserved
Reserved
Reserved
Reserved
LI_ERR
Table 5-16
AAL3/4 Head VCC Table field definitions.
Mindspeed Technologies
shows the AAL3/4 Head VCC Table structure.
Rsvd
Reserved
Description/Function
PM_INDEX
STAT
Reserved
™
5.7 Reassembly Control and Status Structures
RX_COUNTER/VPC_INDEX
VCC_INDEX_BASE
EOM_ERR
MID_ERR
Reserved
Reserved
Reserved
SN_ERR
5.0 Reassembly Coprocessor
BFR1
Table 5-17
AAL_EN
ABR_CTRL
details the
BFR0
5-45