ppc440gx-3rf800cz Applied Micro Circuits Corporation (AMCC), ppc440gx-3rf800cz Datasheet - Page 11

• Manufacturer Part Number: ppc440gx-3rf800cz
• Description: Power Pc 440gx Embedded Processor
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

Revision 1.17 – July 16, 2008
On-Chip SRAM
Features include:
PCI-X Interface
The PCI-X interface allows connection of PCI and PCI-X devices to the PowerPC processor and local memory.
This interface is designed to Version 1.0a of the PCI-X Specification and supports 32- and 64-bit PCI-X buses. PCI
32/64-bit conventional mode, compatible with PCI Version 2.3, is also supported.
Reference Specifications:
Features include:
AMCC
• OPB
• DCR
• Four banks of 64KB each for a total of 256KB
• Configurable as either Code (L2) cache or software-controlled on-chip memory, or SRAM
• Memory cycles supported:
• Sustainable 2.6GB/s peak bandwidth at 166MHz
• Use as an L2 cache improves processor performance and reduces the PLB load
• Use as Ethernet packet store allows Ethernet packets to be held for processing by the TAH unit
• PowerPC CoreConnect Bus (PLB) Specification Version 3.1
• PCI Specification Version 2.3
• PCI Bus Power Management Interface Specification Version 1.1
• PCI-X 1.0a
• PCI 2.3 backward compatibility
• Can be the PCI Host Bus Bridge or an Adapter Device's PCI interface
• Internal PCI arbitration function, supporting up to six external devices, that can be disabled for use with an
• Support for Message Signaled Interrupts
Data Sheet
external arbiter
- Dynamic bus sizing 32-, 16-, and 8-bit data path
- 36-bit address
- 83.33MHz, maximum 333MB/s
- 32-bit data path
- 10 bit address
- Single beat read and write, 1 to 16 bytes
- 32- and 64-byte burst transfers
- Guarded memory accesses
- Cache coherency maintained by a hardware snoop mechanism or software
- Data Array and Tag Array parity
- Unified data and instruction cache
- 4-way set associative
- 36-bit addressing
- Full LRU replacement algorithm
- Write through, look aside
- Split transactions
- Frequency to 133MHz
- 32- and 64-bit bus
- Frequency to 66MHz
- 32- and 64-bit bus
440GX – Power PC 440GX Embedded Processor
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