Figure 16 Separate Redundant Control Memory Handles The Exchange Of Control Information Between Processors And Cache Memory About The Status, Location, And Configuration Of Data - Hitachi Lighting 9900 Series Architecture Manual

control memory in its "split" configuration. Again, control memory is mirrored. This path
topology is used to facilitate this mirrored architecture.
Either way the bandwidth is calculated in the CM-HSM, the bandwidth is 3.2GB/sec
total when all of the processor modules are installed. 4 bits clocked at 100MHz equals
50MB/sec per path multiplied by 64 ports is 3.2GB/sec bandwidth. Or, the full 8-bit path
clocked at 100MHz multiplied by the combined 32 ports of the control memory "pair"
equals 3.2GB/sec total.
Hi-Star Architecture – An Internal Switched Hierarchical Star Network
Figure 16 – Separate
redundant control
memory handles the
exchange of control
information between
processors and cache
memory about the
status, location, and
configuration of data.
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