Intel IQ80321 manual Intel 80321 I/O Processor Block Diagram

Intel® IQ80321 I/O Processor Evaluation Platform

Introduction

1.6Intel® 80321 I/O Processor

About the Intel® 80321 I/O processor.

The Intel® 80321 I/O processor combines the Intel® XScale™ core with powerful new features to create an intelligent I/O processor. This single-function PCI device is fully compliant with the PCI Local Bus Specification, Revision 2.2. The Intel® 80321 I/O processor-specific features include:

•Intel® XScale™ core

•PCI - Local Memory Bus Address Translation Unit (ATU)

•I2O* Messaging Unit (MU)

•Direct Memory Access (DMA) Controller

•Peripheral Bus Interface (PBI) Unit

•Integrated Memory Controller Unit (MCU)

•Performance Monitor Unit (PMU)

•Application Accelerator Unit (AAU)

•Two I2C Bus Interface Units (BIU)

•Synchronous Serial Port (SSP) Unit

•Eight General Purpose Input Output (GPIO) Ports

Figure 1. Intel® 80321 I/O Processor Block Diagram

	72Bit- Interface		32Bit- Interface	C	SerialBus			SerialBus
				2
				I
Intel®	DDR
XScale™	Memory		Peripheral		I2C Bus	Application		SSP
Core	Controller		Bus
				Interface		Accelerator		Serial Bus
	Unit		Interface
			Internal Bus
	Messaging		Address			Two	Performance
	Unit	Translation				DMA	Monitoring
			Unit			Channels		Unit
						Intel®	80321 I/O Processor
	64-bit / 32-bit PCI Bus
								A9646-01

16 Board Manual