ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 321

• Manufacturer Part Number: ibm3206k0424
• Description: Ibm Processor For Network Resources
• Manufacturer: ETC-unknow

Preliminary
REASM is made up of a number of sub-entities to provide the overall receive functionality. REASM contains
the following sub-entities:
RXBUF
RXXLT
RXCRC
RXAAL
RXLCD
REASM Sub-Entity Block Diagram
RXXLT, RXCRC, and RXAAL form a cell processing pipeline. Each stage is allowed up to a cell time to
process the cell it is currently working on. This means each cell has the potential to have a three-cell time
latency through the REASM entity. The overall performance should be at its maximum since a single cell
completes processing every cell time. The stages are allowed to run faster if there is no blocking condition.
The only blocking condition is the latency of memory accesses and the total length of the nano-program that
needs to run.
The following sections provide a brief description of each sub-entity and the function it provides.
pnr25.chapt05.01
August 14, 2000
REASM
POOLS
RXXLT
Provides receive cell/packet buffering between LINKC and REASM. Also defines
the port configurations and mappings.
Provides general LCD translation facilities.
Provides CRC facilities.
Performs the Cell And Packet reassembly functions including AAL processing and
all Cell and Packet Post-Processing functions.
Provides RX LCD caching for the REASM sub-entities.
COMET
RXCRC
RXLCD
RXBUF
LINKR
RXAAL
PAKIT
IBM Processor for Network Resources
Cell/Packet Re-assembly (REASM)
RXQUE
DMAQS
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IBM3206K0424