12 Evaluation Platform Board Manual
Intel® IQ80332 I/O Processor
Introduction
1.6 Intel® 80332 I/O Processor
About the 80332. The 80332 is a multi-function device that combines the Intel XScale® cor e with
intelligent peripherals, and integrates two PCI Expres s-to-PCI Bridges. The 80332 consolidates into a
single syste m:
•Intel XScale® core.
•x8 PCI Express Upstream Link.
•Two PCI Express-to-PCI Bridges supporting PCI-X interface on both segments.
•PCI Standard Hot Plug Controller (segment B).
•Address Translation Unit (ATU): PCI-to-Internal Bus Application Bridge, interfaced to the
segment A.
•High-Performance Memory Controller.
•Interrupt Controller with 17 external interrupt inputs.
•Two Direct Memory Access (DMA) Controller.
•Peripheral Bus Interface (PBI) Unit.
•Performance Monitor Unit (PMU).
•Application Accelerator Unit (AAU).
•Two I 2C Bus Interface Units (BIU).
•Two 16550 Compatible UARTs with flow control (4 pins).
•Eight General Purpose Input Output (GPIO) Ports.
The 80332 is an integrated processor tha t addresses the needs of intelligent I/O appl ications and helps
reduce intelligent I/O system costs.
PCI Express is an industry st andard, high performance, low latency system interconnec t. The 80332
PCI Express upstream l ink is capable of x8 lane widt hs at 2.5 GHz operation as defi ned by the PCI
Express Specification, Revision 1.0. Th e addition of the Intel XScale® core brings int elligence to the
PCI Express-to-PCI Bridges.
The 80332 integrates dual PCI Express-to-PCI-X Bridges with the ATU as an integrated secondary
PCI device. The Upstream PCI Express port implements the PCI-to-PCI Bridge programming model
according to the PCI Express Specification, Revision 1.0. The Primary Address Translation Unit is
compliant with the PCI-X Specification , Revision 1.0a definitions of an ‘application brid ge’.
For more in depth informatio n in regards to the 80332, plea se see the Intel® 80332 I/O P rocessor
Developer’s Manual.