Revision 1.21 – June 22, 2012
PPC440GX Embedded Processor
Data Sheet
PPC440GX Features
The following sections provide information on the features of the chip.
PowerPC 440 Processor Core
The PowerPC 440 processor core is designed for high-end applications: RAID controllers, SAN, ISCSI, routers,
switches, printers, set-top boxes, etc. It is the first processor core to implement the Book E PowerPC embedded
architecture and the first to use the 128-bit version of IBM’s on-chip CoreConnect Bus Architecture.
Features include:
• Up to 667MHz operation
• PowerPC Book E architecture
• 32KB I-cache, 32KB D-cache
- UTLB Word Wide parity on data and tag address parity with exception force
• Three logical regions in D-cache: locked, transient, normal
• D-cache full line flush capability
• 41-bit virtual address, 36-bit (64GB) physical address
• Superscalar, out-of-order execution
• 7-stage pipeline
• 3 execution pipelines
• Dynamic branch prediction
• Memory management unit
- 64-entry, full associative, unified TLB with parity
- Separate instruction and data micro-TLBs
- Storage attributes for write-through, cache-inhibited, guarded, and big or little endian
• Debug facilities
- Multiple instruction and data range breakpoints
- Data value compare
- Single step, branch, and trap events
- Non-invasive real-time trace interface
• 24 DSP instructions
- Single-cycle multiply and multiply-accumulate
- 32 x 32 integer multiply
- 16 x 16 -> 32-bit MAC
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