Order Number: 305433, Revision: 003US
July 200 5
Intel
®
80333 I/O Processor
Datasheet
Product Features
■ Integrated Intel XScale
®
core
—500, 667 and 800 MHz
—ARM* V5TE Compliant
—32 KByte, 32-way Set Associative
Instruction Cache with cache locking
—32 KByte, 32-way Set Associative Dat a
Cache with cache locking. Supports
write through or write back
—2 KByte, 2-way Set Associative Mini-
Data Cache
—128-Entry Branch Target Buffer
—8- Ent ry Write Bu ffer
—4-Entry Fill and Pend Buffer
—Performance Monitor Unit
■ Internal Bus 333 MHz/64-b it
■ PCI Expr ess*-to- PCI Bridges
—x8 PCI Express* Upstream Link
—PCI Express* Specification 1.0a
compliant
—PCI-X Bus A (IOP bus - ATU interface)
—PCI-X Bus B (Slot Expansion bus)
supports standard PCI Hot-Plug
Controller
—Four output clocks per PCI-X bus
■ Address Translation Unit
—2 KB or 4 KB Outbound Read Queue
—4 KB Outbound Write Queue
—4 KB Inbound Read and Write Queue
—Connects Internal Bus to PCI/X Bus A
—Messa ging Un i t and Expansion ROM
■ Two Progr ammable 32-b i t Timers and
Watchdog Timer
■ Eight General Purpos e I/O Pins
■ Two I
2
C Bus Interface Units
■ Dual-Ported Memory Controller
—PC2700 Double Data Rate (DDR333)
SDRAM
—DDRII 400 SDRAM
—Up to 2 GB of 64- bit DDR333
—Up to 1 GB of 64-bit DDRII400
—Optional Single-bit Error Correction,
Multi-bit Detection Support (ECC)
—Supports Unbuffered or Registered
DIMMs and Discrete SD RAM
—32-bi t memor y support
■ DMA Controller
—Two Independent Channels Connected
to Internal Bus
—Two 1KB Queues in Ch0 and Ch1
—CRC-32C Calculation
■ Application Accelerator Unit
—RAID6 support
—Performs optional XOR on Read Data
—Compute Parity Across Local Memory
Blocks
—1 KB /512 byte Sto re Que ue
■ Two UART (16550) Units
—64-byte Receive and Transm it FIFOs
—4-pin, Master/Slave Capable
■ Peripheral Bus Interface
—8-/16-bit Data Bus with Two Chip Selects
■ Interrupt Controller Unit
—Four Priority Levels
—Vec tor Generation
—Sixteen External Interrupt Pins with
High Priority Interrupt (HPI#)
■ 829-Ball, Flip Chip Ball Grid Array (FCBGA)
—37.5mm
2
and 1.27 mm ball pitch
