CN8236EBGB Mindspeed Technologies, CN8236EBGB Datasheet - Page 220

• 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

6.0 Traffic Management
6.5 Traffic Management Control and Status Structures
6-52
Table 6-21. ABR SCH_STATE Field Descriptions (1 of 3)
L_EXP
L_MAN
I_EXP
I_MAN
PRESENT
MCR_LIM_NZ
DELTA_SIGN
DELTA_NZ
MCR_LIM_EXP
MCR_LIM_MAN
DELTA_EXP
DELTA_MAN
EN_SRC_NCR
S_NCR_TRIG
S_NCR_DIR
OOR_PRI
DCR_STAT
TM_EXP
BCK_OOR
FWD_OOR
SCH_OOR
TA_XMIT
TA_PND
CELL_INDEX
Field Name
GCRA L parameter exponent for ER rate.
GCRA L parameter mantissa for ER rate.
GCRA I parameter exponent for ER rate.
GCRA I parameter mantissa for ER rate.
Current Schedule table position.
MCR Limit is non-0.
must be set to 1.
Delta is non-0 for ER rate.
MCR Limit exponent.
MCR_LIM_EXP must satisfy MCR_LIM_EXP
must be set to a decimal value of 31 (binary all-1s).
MCR Limit mantissa.
MCR_LIMIT is
This format for calculating MCR_LIMIT is the same as used with the GCRA I parameter to calculate rates.
VCC priority is increased by 1 when rate falls below 1 / MCR_LIM.
must be set to a decimal value of 511 (binary all-1s).
Delta exponent for ER rate.
Delta mantissa for ER rate.
Desired position for ER rate is
Enable source ACR change notification processing.
Indicate direction of source ACR trigger. 1 for HI, 1 for low.
Segmentation priority for out-of-rate RM cells.
Destination ACR change status to be sent. Initialize to logic low.
RM_TIME value has expired and is no longer valid.
Backward RM cell has been scheduled out-of-rate.
Forward RM cell has been scheduled out-of-rate.
A Backward RM cell has been transmitted after the last Forward RM cell transmitted.
A Backward RM cell is waiting for transmission.
ER cell type decision block index for cell type decisions. The cell type decision block is located at byte
address SCH_ABRB × 128 + 8 × CELL_INDEX.
Delta is negative for ER rate.
Source ACR change has been triggered. Initialize to logic flow.
VCC has halted due to low ACR and has out-of-rate Forward RM cells enabled.
To disable priority bumping, MCR_LIMIT must be set to its maximum value. Thus, MCR_LIM_NZ
To disable priority bumping, MCR_LIMIT must be set to its maximum value. Thus, MCR_LIM_EXP
MCR_LIM_NZ × 2
To disable priority bumping, MCR_LIMIT must be set to its maximum value. Thus, MCR_LIM_MAN
DELTA_NZ × 2
(DELTA_EXP–10)
Mindspeed Technologies
(MCR_LIM_EXP–10)
(1+DELTA_MAN / 512) + PRESENT
(1 + MCR_LIM_MAN / 512)
Description
ATM ServiceSAR Plus with xBR Traffic Management
29.
™
28236-DSH-001-B
CN8236