參數(shù)資料
型號(hào)： 80960RM
廠商： Intel Corp.
英文描述： 80960RM I/O Processor(80960RM I/O 處理器)
中文描述： 80960RM I / O處理器（80960RM的I / O處理器）
文件頁(yè)數(shù)： 8/54頁(yè)
文件大?。?/td> 855K
代理商： 80960RM
80960RM
—
Data Sheet
8
Advance Information
2.0
Functional Overview
As indicated in
Figure 1
, the 80960RM processor combines many features with the 80960JT to
create an intelligent I/O processor. Subsections following the figure briefly describe the main
features; for detailed functional descriptions, refer to the
i960
RM/RN I/O Processor Developer
’
s
Manual
.
The PCI bus is an industry standard, high performance, low latency system bus that operates up to
264 Mbyte/s. The 80960RM processor, a multi-function PCI device, is fully compliant with the
PCI Local Bus Specification
, Revision 2.1. Function 0 is the PCI-to-PCI bridge unit; Function 1 is
the address translation unit.
The PCI-to-PCI bridge unit is the path between two independent 64-bit PCI buses and provides the
ability to overcome PCI electrical load limits. The addition of the i960 core processor brings
intelligence to the bridge.
The 80960RM processor, object code compatible with the i960 core processor, is capable of
sustained execution at the rate of one instruction per clock.
The internal bus, a 64-bit PCI-like bus, is a high-speed interface to local memory and I/O. Physical
and logical memory attributes are programmed via memory-mapped control registers (MMRs); an
extension not found on the i960 Kx, Sx or Cx processors.
Figure 1.
80960RM Functional Block Diagram
PCI to PCI
Bridge
80960 Core
Processor
Secondary PCI
Arbitration
Unit
32-bit Secondary PCI Bus
32-bit Primary PCI Bus
64-bit Internal Bus
Local Memory
(SDRAM, Flash)
I
2
C Bus
Interface
Address
Translation
Memory
Controller
Internal
Arbitration
Two DMA
Channels
I
2
C Serial Bus
80960RM Processor
Address
Translation
One DMA
Channel
Application
Accelerator
Messaging
Unit
Bus
Interface
Performance
Monitoring
Unit
相關(guān)PDF資料
PDF描述
80960RN 80960RN I/O Processor(80960RN I/O 處理器)
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