Cabletron Systems SmartSwitch 9500, Hardware And Installation Manual

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3-1
Chapter 3
Operation
The 9A600 provides switching between the front panel interfaces (ANIMs). Figure
3-1 shows the trafÞc ßow of ATM cells in the 9A600. The following sections brießy
describe the functions of the i960 Processor, the ASICs, and how they relate to
ATM cell trafÞc ßow.
Figure 3-1. 9A600 Block Diagram
TDM Bus
Phycsical
Connection
to Network
ATM CELLS
ATM CELLS
UTOPIA
ASICs
Separates/assembles
cell header data
Translates headers and provides
routing information to move ATM
cells out of the TDM
TDM
ASIC
Segments and reassembles
data into ATM cells
SARI
ASIC
DATA
To SMB-1 & 10
To Z-80 Processor
ROUTING INFORMATION CELL HEADER INFORMATION
Queue
ASICs
Provides translation between
the I/O ATM bidirectional data
and the TDM
DATA
CPU
i960
Provides management and
configuration interface for
the 9A600
Shared DRAM
SAR