CN8236EBGB Mindspeed Technologies, CN8236EBGB Datasheet - Page 221
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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CN8236
ATM ServiceSAR Plus with xBR Traffic Management
28236-DSH-001-B
Table 6-21. ABR SCH_STATE Field Descriptions (2 of 3)
FWD_INDEX
RM_TIME
RATE_INDEX
EB_INDEX
CRM
UNACK
S_NCR_LO_EXP
S_NCR_LO_MANT
NEXT_OOR
MCR_INDEX
ICR_INDEX
TA_ID
TA_DIR
TA_BN
TA_CI
TA_NI
TA_RA
D_NCR_DIR
TA_ER
TA_CCR
TA_MCR
FWD_ID
FWD_DIR
FWD_BN
FWD_CI
FWD_NI
FWD_RA
FWD_ER
S_NCR_HI_EXP
S_NCR_HI_MANT
Field Name
ER cell type decision block index for cell-type decisions after a Forward RM cell is transmitted.
Global slot count [21:6] at time of last Forward RM transmission.
SCH_ABRB × 128 + 32 × RATE_INDEX.
SCH_ABRB × 128 + EB_INDEX × 128.
ER parameter.
Number of Forward RM cells transmitted since last Backward RM cell received. Initialize to 0.
Source ACR lower threshold, mantissa portion.
Next VCC index for linking out-of-rate RM cells.
Minimum Cell Rate decision block index. The rate decision block is located at byte address
SCH_ERB × 128 + 32 × MCR_INDEX.
Initial Cell Rate decision block index. The rate decision block is locate at byte address
SCH_ERB × 128 + 32 × ICR_INDEX.
ID field from most recent received Forward RM cell. This field is written by the SAR.
CI field for turnaround (Backward) RM cell. This field is written by the SAR.
NI field for turnaround (Backward) RM cell. This field is written by the SAR.
RA field from most recent received Forward RM cell. This field is written by the SAR.
Indicates direction of destination ACR trigger. 1 for HI, 0 for low.
ER field for turnaround (Backward) RM cell. This field is written by the SAR.
CCR field from most recent received Forward RM cell. This field is written by the SAR.
ID field for transmitted Forward RM cells. This field is supplied by the user.
DIR field for transmitted Forward RM cells. This field is supplied by the user.
BN field for transmitted Forward RM cells. This field is supplied by the user.
CI field for transmitted Forward RM cells. This field is supplied by the user.
NI field for transmitted Forward RM cells. This field is supplied by the user.
RA field for transmitted Forward RM cells. This field is supplied by the user.
ER field for transmitted Forward RM cells. This field is supplied by the user.
ER rate decision block index. The rate decision block is located at byte address
ER exponent table index for rate index block. The exponent table is located at byte address
Source ACR lower threshold, exponent portion.
DIR field for turnaround (Backward) RM cell. This field is written by the SAR.
BN field for turnaround (Backward) RM cell. This field is written by the SAR.
MCR field from most recent received Forward RM cell. This field is written by the SAR.
Source ACR upper threshold, exponent portion.
Source ACR upper threshold, mantissa portion.
Mindspeed Technologies
Description
6.5 Traffic Management Control and Status Structures
™
6.0 Traffic Management
6-53
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