Intel IQ80321 User Manual

16

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)

•

I

2

O* 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 I

2

C Bus Interface Units (BIU)

•

Synchronous Serial Port (SSP) Unit

•

Eight General Purpose Input Output (GPIO) Ports

A9646-01

I

2

C

Serial Bus

32-Bit

Interface

72-Bit

Interface

Serial Bus

I

2

C Bus

Interface

Peripheral

Bus

Interface

Application

Accelerator

Performance

Monitoring

Unit

Two

DMA

Channels

SSP

Serial Bus

Address

Translation

Unit

Messaging

Unit

DDR

Memory

Controller

Unit