cn8236 Mindspeed Technologies, cn8236 Datasheet - Page 140
cn8236
Manufacturer Part Number
cn8236
Description
Atm Servicesar Plus With Xbr Traffic Management
Manufacturer
Mindspeed Technologies
Datasheet
1.CN8236.pdf
(443 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
cn8236EBGB
Manufacturer:
VIA
Quantity:
150
Company:
Part Number:
cn8236EBGB
Manufacturer:
CONEXANT
Quantity:
329
- Current page: 140 of 443
- Download datasheet (5Mb)
5.0 Reassembly Coprocessor
5.4 Buffer Management
5-30
the RX_COUNTER[15:0] of the applicable channel. For proper operation of the
update interval function, buffers must be returned at the same time as credits are
returned.
return buffer credits independently from buffer usage, the CN8236 maintains a
separate read pointer into free buffer queues that return credits. This pointer name
is FORWARD, located in the free buffer queue base table entry. The host
determines the number of Bank 0 free buffer queues that return credits by setting
FWD_EN in the RSM_FQCTRL register.
When a write completes, the CN8236 begins processing firewall return credits on
that queue. The third word of each entry is read, and if FWD_VLD is set, a credit
is added to the VCC_INDEX indicated. The CN8236 continues to process credit
return entries until FWD_VLD is zero. Multiple free buffer queues might have
credit return entries outstanding at one time. The CN8236 processes the entries
according to the priority set in FWD_RND in the RSM_FQCTRL register. If
FWD_RND is a logic low, the CN8236 exhausts the credit returns on the highest
number active queue before proceeding to other queues. Otherwise, it services the
queues in round-robin order.
FORWARD read pointer to the first entry where credit is returned. Typically, this
is the first entry after the initial buffers placed on the queue.
Credits are returned to VCCs through Bank 0 free buffer queues. In order to
The CN8236 snoops writes to free buffer queues that return firewall credits.
Before the reassembly coprocessor is enabled, the host must initialize the
Mindspeed Technologies
ATM ServiceSAR Plus with xBR Traffic Management
™
28236-DSH-001-B
CN8236
Related parts for cn8236
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Framer SDH ATM/POS/STM-1 SONET/STS-3 3.3V 272-Pin BGA
Manufacturer:
Mindspeed Technologies
Part Number:
Description:
RS8234EBGC ATM XBR SAR
Manufacturer:
Mindspeed Technologies
Datasheet:
Part Number:
Description:
ATM SAR 155Mbps 3.3V ABR/CBR/GFR/UBR/VBR 388-Pin BGA
Manufacturer:
Mindspeed Technologies
Datasheet:
Part Number:
Description:
ATM IMA 8.192Mbps 1.8V/3.3V 484-Pin BGA
Manufacturer:
Mindspeed Technologies
Datasheet:
Part Number:
Description:
ATM SAR 622Mbps 3.3V ABR/CBR/GFR/UBR/VBR 456-Pin BGA
Manufacturer:
Mindspeed Technologies
Datasheet:
Part Number:
Description:
RS8234EBGD ATM XBR SAR, ROHS
Manufacturer:
Mindspeed Technologies
Part Number:
Description:
3-PORT T3/E3/STS-1 LIU WITH/ DJAT IC (ROHS)
Manufacturer:
Mindspeed Technologies
Part Number:
Description:
ATM IMA 800Mbps 1.8V/3.3V 256-Pin BGA
Manufacturer:
Mindspeed Technologies
Datasheet:
Part Number:
Description:
Framer SDH ATM/POS/STM-1 SONET/STS-3 3.3V 272-Pin BGA
Manufacturer:
Mindspeed Technologies
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet:
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet:
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet:
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet:
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet:
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet: