CN8236EBGB Mindspeed Technologies, CN8236EBGB Datasheet - Page 213

• 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

Table 6-9. Schedule Slot Field Descriptions—CBR Traffic
Table 6-11. CBR SCH_STATE Field Descriptions
CN8236
ATM ServiceSAR Plus with xBR Traffic Management
Table 6-10. SCH_STATE for SCH_MODE = CBR
28236-DSH-001-B
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
CBR
PRI3
PRI2
PRI1
PRI0
CBR_VCC_INDEX
NOTE(S):
PRI2 the same priority. PRI1 and PRI0 values are Don’t Cares in this case. If two priorities are to be assigned to the tunnel,
assign the higher priority to PRI3 and the lower priority to PRI2, making PRI1 the same as PRI2. PRI0 is a Don’t Care in this
case. If three priorities are to be assigned to the tunnel, assigns the priorities by level to PRI3 (highest), PRI2 and PRI1 (lowest),
making PRI0 the same as PRI1. TUN_PRI0_OFFSET can be used to set PRI0 = PRI1, as needed.
TUN_PRI_3
TUN_PRI_2
TUN_PRI_1
TUN_PRI_0
7
8
9
Field Name
6.5.2.3 SCH_STATE
Field Name
If the user wants only one priority of traffic scheduled in the CBR tunnel, assign the priority level to PRI3, and make
Fields For CBR
When SCH_MODE is CBR and CBR_W_TUN bit is set to 1, this field specifies the highest priority of four
possible scheduling priority queues to service in place of the unused CBR slot. (This field is not active
when CBR_W_TUN = 0.)
When SCH_MODE is CBR and CBR_W_TUN bit is set to 1, this field specifies the second highest priority
of four possible scheduling priority queues to service in place of the unused CBR slot. (This field is not
active when CBR_W_TUN = 0.)
When SCH_MODE is CBR and CBR_W_TUN bit is set to 1, this field specifies the third highest priority of
four possible scheduling priority queues to service in place of the unused CBR slot. (This field is not
active when CBR_W_TUN = 0.)
When SCH_MODE is CBR and CBR_W_TUN bit is set to 1, this field specifies the lowest priority of four
possible scheduling priority queues to service in place of the unused CBR slot. (This field is not active
when CBR_W_TUN = 0.)
Set high to indicate a CBR slot; set low to indicate a tunnel slot.
Specifies the highest priority of four possible scheduling priority queues to service when a scheduling
slot for this CBR tunnel becomes active.
Specifies the second highest priority of four possible scheduling priority queues to service when a
scheduling slot for this CBR tunnel becomes active.
Specifies the third highest priority of four possible scheduling priority queues to service when a
scheduling slot for this CBR tunnel becomes active.
Specifies the lowest priority of four possible scheduling priority queues to service when a scheduling
slot for this CBR tunnel becomes active.
Segmentation VCC index for dedicated CBR schedule slot. CBR VCC indexes range from 0x0000 to
0x7FFE.
This section specifies the SCH_STATE portion (words 7 through 9) of the
Segmentation VCC table entry, when SCH_MODE = CBR.
detailed in
Reserved
The CBR SCH_STATE is shown in
Mindspeed Technologies
Table
6-11.
Reserved
Reserved
Description
Description
TUN_PRI_3
6.5 Traffic Management Control and Status Structures
Table
™
6-10, and the field descriptions are
TUN_PRI_2
6.0 Traffic Management
TUN_PRI_1
TUN_PRI_0
6-45