RS8234EBGC Mindspeed Technologies, RS8234EBGC Datasheet - Page 242

• Manufacturer Part Number: RS8234EBGC
• Description: RS8234EBGC ATM XBR SAR
• Manufacturer: Mindspeed Technologies

9.0 Local Memory Interface
9.3 Memory Size Analysis
9-6
Table 9-2. Memory Size in Bytes
SEG Schedule Table
SEG SEG_PM
RS Queue
SEG Transmit Queues
SEG ER Tables
RSM Free Buffer Queues
RSM PM-OAM
RSM VPI Index Table
Total Fixed
SEG VCC Table
SEG Buffer Descriptors
RSM VCC Table
RSM VCI Index Table
Total Incremental
Grand Total
Data Structure
9.3 Memory Size Analysis
Table 9-2
VCCs under the following assumptions:
SEGMENTATION
1.
2.
3.
4.
5.
6.
7.
REASSEMBLY
1.
2.
3.
4.
5.
6.
7.
20,480
16,896
1024
8,192
1,024
67,200
4,096
512
1,024
99,200
40,960
49,152
92
110,684
209,884
Schedule Table is 2,112 schedule slots and each slot is a double word. This
allows CBR and three-priority VBR schedule in 64 K bits/sec increments
for an OC-3 connection.
Eight ABR Templates.
32 OAM PM channels active.
Transmit queues configured for 256 entries.
No status queues in SAR local memory.
Each active channel has an average of one active segmentation buffer.
RS_Queue size is 1,024.
Eight VPIs per 1,024 channels.
1 K preallocation on VPI=0 only.
UNI VPI space.
32 OAM PM channels active.
Free buffer queues configured for 256 entries.
No status queues in SAR local memory.
FBQ pools 0-15 have 4-word entries, and pools 16-31 have 2-word entries.
Mindspeed Technologies
gives the segmentation memory size requirements for 1,024 configured
One Peer
16,896
1024
8,192
16,384
67,200
65,536
512
1,024
176,000
40,960
20,480
49,152
92
110,684
286,684
ATM ServiceSAR Plus with xBR Traffic Management
16 Peers
™
16,896
1024
8,192
32,768
67,200
98,304
512
1,024
225,152
40,960
20,480
49,152
92
110,684
335,836
28234-DSH-001-B
32 Peers
RS8234