CN8237EBGB Mindspeed Technologies, CN8237EBGB Datasheet - Page 152

• Manufacturer Part Number: CN8237EBGB
• Description: ATM SAR 622Mbps 3.3V ABR/CBR/GFR/UBR/VBR 456-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of CN8237EBGB

• Package: 456BGA
• Traffic Class: ABR|CBR|GFR|UBR|VBR
• Utopia Type: Level 1|Level 2
• Host Interface: PCI
• Maximum Data Rate: 622 Mbps
• Typical Operating Supply Voltage: 3.3 V
• Minimum Operating Supply Voltage: 3.135 V

5.0 Reassembly Coprocessor
5.7 Reassembly Control and Data Structures
Table 5-28. Reassembly Status Queue Entry Descriptions (1 of 2)
5-44
BD_PNTR
UU
CPI
CPCS_LENGTH
TRCC0
TRCC0+1
PDU_CHECKS
VCC_INDEX
VLD
STATUS
FWD_PM
OAM
Field Name
Buffer descriptor pointer. In Message Mode, pointer to the first buffer descriptor in the linked list. In
Streaming Mode, pointer to an individual buffer descriptor.
AAL5 CPCS-UU field.
AAL5 CPCS-CPI field. In AAL0 PTI terminated mode, the least significant bit contains the most
significant bit of the total PDU length. The CPCS_LENGTH field contains the 16 least significant bits.
AAL5 CPCS-LENGTH field. In AAL0 PTI terminated mode, it is the 16 least significant bits of the total
PDU length. The CPI field contains the most significant bit.
PM total received cell count for CLP = 0.
PM total received cell count for CLP = 0+1.
Set various error flags related to PDUs.
BA_ERROR = AAL5: Indicates that the total PDU length exceeds MAX_LENGTH when AUU = 1.
LEN_ERROR = Total CPCS-PDU length exceeds maximum length and not at end of message.
PAD_ERROR= PAD field length is not correct.
CPI_ERROR = CPI field is not all
CRC_ERROR= AAL5 CPCS or OAM CRC error.
LP
CI_LAST
CI
VCC index of channel.
Valid. Indication that status entry is valid. The host must set to 0 after processing status.
Sets various status bits. The STATUS field contains the following control bits:
FFPD
EPD
FW
UNDF
OVFL
SFPD
TO
ABORT
CNT_ROVR = Indication that the SERV_DIS counter has rolled over on the channel.
PM-OAM Forward Monitoring cell detected.
A non-0 field indicates that an OAM or management cell has been received as follows:
001 = F4 OAM
010 = F4 OAM End to End
100 = F5 OAM
101 = F5 OAM End to End
110 = PTI = 6
111 = PTI = 7
FFPD
= Value of CLP header bit ORed across the CPCS-PDU.
= Value of the PTI[1] header bit in the last cell of the CPCS-PDU.
= Value of the PTI[1] header bit ORed across the CPCS-PDU.
= DMA FIFO buffer Full Packet Discard.
= Early Packet Discard occurred. A partially reassembled CPCS-PDU has been discarded
= Firewall error condition occurred. If early packet discard occurs, EPD is set.
= Free Buffer Queue Underflow occurred. If early packet discard occurs, EPD is set.
= Last available Status Queue entry.
= Status Full Packet Discard occurred. EPD is not set.
= Reassembly time-out condition occurred on this channel. EPD is not set.
= Abort function detected. EPD not set.
due to firewall, buffer underflow, LI_EPD, SN_EPD, ST_EPD, CLP discard or Max PDU
length exceeded.
EPD
Mindspeed Technologies
FW
0
.
UNDF
ATM OC-12 ServiceSAR Plus with xBR Traffic Management
Description/Function
OVFL
™
SFPD
TO
ABORT
28237-DSH-001-C
CNT_ROVR
CN8237