CN8236EBGB Mindspeed Technologies, CN8236EBGB Datasheet - Page 148
CN8236EBGB
Manufacturer Part Number
CN8236EBGB
Description
ATM SAR 155Mbps 3.3V ABR/CBR/GFR/UBR/VBR 388-Pin BGA
Manufacturer
Mindspeed Technologies
Datasheet
1.CN8236EBGB.pdf
(443 pages)
Specifications of CN8236EBGB
Package
388BGA
Traffic Class
ABR|CBR|GFR|UBR|VBR
Utopia Type
Level 1|Level 2
Host Interface
PCI
Maximum Data Rate
155 Mbps
Typical Operating Supply Voltage
3.3 V
Minimum Operating Supply Voltage
3 V
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5.0 Reassembly Coprocessor
5.7 Reassembly Control and Data Structures
5-38
Table 5-6. VPI Index Table Entry Descriptions
Table 5-9. VCI Index Table Descriptions
Table 5-7. Normal VCI Index Table Format
Table 5-8. VCI Index Table Format with EN_PROG_BLK_SZ (RSM_CTRL1) Enabled
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
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
BLK_EN
VCC_BLOCK_INDEX
VP_EN
VCI_RANGE
VCI_IT_PNTR
0
0
Field Name
Field Name
Block Enable. If logic high, enables entry. If a logic low, the cell is discarded.
VCC block index.
allocated to VCI[15:6]. In this case, VCC_BLOCK_INDEX is concatenated with the six least significant
bits of the VCI to form the index into the RSM VCC table to access the VCC table entry for that channel.
VCC_BLK_INDEX are concatenated with the [(value of VCI_IT_BLK_SZ) – 1] least significant bits of the
VCI to form the index into the VCC table to access the VCC table entry. For example, if the value of
VCI_IT_BLK_SZ = 4, the resultant RSM VCC_INDEX pointer = {VCC_BLK_INDEX[15:4],
CELL_VCI[3:0]}.
Enables the VPI for lookup processing. If not enabled, cell is discarded, and the CELL_DSC_CNT
counter is incremented.
Determines the maximum VCI value allowed. If cell VCI exceeds maximum, cell is discarded and
counted as CELL_DSC_CNT.
significant bit set at 1. When EN_PROG_BLK_SZ(RSM_CTRL1) is enabled, all 16 bits of the field
can be set by the user.
VCI Index Table Base Pointer. Points to the base of the VCI Index table for the VPI by appending two
least significant 0 bits to form a byte address.
When EN_PROG_BLK_SZ is not enabled, this is the index to the block of 64 RSM VCC table entries
When EN_PROG_BLK_SZ is enabled, the [16 – (value of VCI_IT_BLK_SZ)] most significant bits of
In normal operation, the 10 most significant bits can be set by the user, with the six least
Reserved
VCC table and VCI Index table block size enabled.
(RSM_CTRL1) enabled.
Reserved
Table 5-7
Table 5-8
Table 5-9
Mindspeed Technologies
describes the VCI Index table format without the programmable
describes the VCI Index table format with EN_PROG_BLK_SZ
describes the VCI Index table Descriptions.
Description/Function
Description/Function
ATM ServiceSAR Plus with xBR Traffic Management
VCC_BLOCK_INDEX
™
VCC_BLOCK_INDEX
28236-DSH-001-B
Reserved
CN8236
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