Intel user manual 3.0Intel 80321 I/O Processor, Intel IQ31244 Customer Reference Board

Intel® IQ31244 Customer Reference Board

3.0Intel® 80321 I/O Processor

The Intel® 80321 I/O Processor is based on the Intel XScale® micro-architecture core (compliant with ARM* architecture). The on-board 80321 processor supports 64-bit applications with operating frequency of up to 100 MHz. The processor operates in conventional PCI mode or in PCI-X mode as defined by the PCI-X Addendum to the PCI Local Bus Specification, Revision 1.0a. The processor has the following features:

•Intel XScale® core

•PCI Local Memory Bus Address Translation Unit (ATU)

•Memory controller unit

•Peripheral Bus Interface (PBI)

•Application accelerator unit

•Two I2C bus interface units

•Two DMA channels

•Performance monitoring unit

•Synchronous serial port unit

•Messaging unit

•Eight general-purpose I/O ports

The 80321 block diagram is shown in Figure 3.

16 User’s Manual