CN8236EBGB Mindspeed Technologies, CN8236EBGB Datasheet - Page 115

• Manufacturer Part Number: CN8236EBGB
• Description: ATM SAR 155Mbps 3.3V ABR/CBR/GFR/UBR/VBR 388-Pin BGA
• Manufacturer: Mindspeed Technologies

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

CN8236
ATM ServiceSAR Plus with xBR Traffic Management
Figure 5-4. Programmable Block Size Alternate Direct Index Method
Table 5-1. Programmable Block Size Values for Direct Index Lookup
28236-DSH-001-B
VCI_IT_BLK_SZ
Base Register (16)
Value of
000
001
010
011
100
101
110
VPI
Value
of
x
0
1
2
3
4
5
6
VPI Index Table
VCI_IT_PNTR
Figure 5-4
values for the number of VCI Index table and VCC table entries per VCI.
Portion of Cell’s
VCI Index Table
The data structures that facilitate this scheme are illustrated in
Table 5-1
VCI[15:0]
VCI[15:1]
VCI[15:2]
VCI[15:3]
VCI[15:4]
VCI[15:5]
VCI[15:6]
VCI
Mindspeed Technologies
illustrates the alternate lookup mechanism.
VCI [15:x]
shows the relationships of the values in VCI_IT_BLK_SZ, and the
Possible VCI Index
Table Entries per
Number of
VCC_BLOCK_INDEX
65536
32768
16384
VCI Index Table
8192
4096
2048
1024
VPI
(For one VPI)
™
Where x = value of VCI_IT_BLK_SZ
Portion of Cell’s
(No pointer)
VCC Table
VCI[1:0]
VCI[2:0]
VCI[3:0]
VCI[4:0]
VCI[5:0]
5.2 Reassembly Functional Description
VCI[0]
is not applicable)
(For x=0, pointer
VCI
VCI [x-1:0]
5.0 Reassembly Coprocessor
Index Table Entry
Entries per VCI
Possible VCC
Reassembly
VCC Table
Number of
Section
16
32
64
1
2
4
8
5.7.1.
8236_103
5-5