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IQ80960RM/RN
Evaluation Board Manual 4-1
i960
®
RM/RN I/O Processor Overview
4
This chapter describes the features and operation of the processor on the IQ80960RM/RN
platform. For more detail, refer to the i960
®
RM/RN I/O Processor Developer’s Manual.
Figure 4-1. i960
®
RM/RN I/O Processor Block Diagram
80960 Core
Processor
Memory
Controller
Bus
Interface
Unit
I
2
C Bus
Interface
Application
Accelerator
Internal
Arbitration
I
2
C Serial Bus
Local Memory
(SDRAM, Flash)
64-bit Internal Bus
One DMA
Channel
Address
Translation
Unit
64-bit/32-bit Secondary PCI Bus
PCI to PCI
Bridge
Messaging
Unit
Two DMA
Channels
Address
Translation
Unit
64-bit/32-bit Primary PCI Bus
Performance
Monitoring
Unit
Secondary
PCI
Arbitration