cn8237 Mindspeed Technologies, cn8237 Datasheet - Page 133

• Manufacturer Part Number: cn8237
• Description: Atm Oc-12 Servicesar Plus With Xbr Traffic Management
• Manufacturer: Mindspeed Technologies

CN8237
ATM OC-12 ServiceSAR Plus with xBR Traffic Management
5.6.1 Structure
Figure 5-13. Data Structure Locations for Status Queues
28237-DSH-001-C
5.6 Status Queue Operation
The CN8237 reports reassembly status to the host using the reassembly status
queue. The reassembly coprocessor normally writes a status queue entry when a
complete CPCS-PDU has been reassembled. One field of the status queue entry
(BD_PNTR) points to the first buffer descriptor in the linked list of buffer
descriptors for that reassembled PDU, and the rest of the fields of that status
queue entry provides data on the status of the reassembled PDU. These fields are
then used by the host in directing further processing.
Two data structures are maintained as illustrated in
memory and one in SAR RSM-shared memory. The status queues (HSTAT_QU)
reside in host memory, and the status queue base table resides in SAR
RSM-shared memory, and allows for up to 32 independent circular status queues.
HOST
Mindspeed Technologies
Status Queue Base Table
SAR RSM-Shared
(Inside the CN8237)
™
Figure
5.0 Reassembly Coprocessor
5.6 Status Queue Operation
5-13: one in host
8237_051
5-25