With speeds of up to 667MHz,support for DDR memory, ethernet and NAND flash interfaces, low power dissipation and a small footprint, the PowerPC 440GR embedded processor is ideally suited to a wide range of high-performance applications, including networking and storage.The 440GR is an excellent choice for 405xx users requiring additional performance or looking to upgrade to DDR memory.
To enhance overall throughput, the PowerPC 440 superscalar core incorporates a 7-stage pipeline and executes up to two instructions per cycle. Its large 32KB data cache and 32KB instruction cache are 64-way set-associative. Versatile configurations enhance performance tuning while optional parity protection preserves data integrity. For additional system performance, the PowerPC 440 core includes dynamic branch prediction and 24 digital signal processing (DSP) instructions, as well as non-blocking caches that can be managed in either write-through or write-back mode.
Features
333 to 667MHz
Nand Flash controller:
Supports 1 to 4 banks of Nand Flash memory devices
Direct interfacing to discrete Nand Flash devices (up to 4 devices) and SmartMedia Card socket (22-pins)
4MB-256MB devices sizes supported
512-byte +16-byte or 2KB +64-byte device page sizes supported
DMA support allows direct, no processor-intervention block copy from Nand Flash out to SDRAM
Boot-from-Nand supported
On-chip Double Data Rate (DDR) SDRAM controller with 32-bit interface, 13-bit addressing, 1.1 GBps peak data rate and optional ECC
Support for 4 banks DDR SDRAM memory of up to 256MB each, maximum capacity of 1GB
Support for 64, 128, 256, and 512MB DDR devices, with CAS latencies of 2,2.5,or 3
32-bit PCI V2.2,3.3 V interface supporting frequencies of up to 66MHz
(2)Ethernet 10/100 Mbps, full duplex MAC (1xMII or 2xRMII)with packet reject interface support
Memory Access Layer (MAL) provides DMA capability to both Ethernet channels
Up to four serial port UARTs (1 x 8-pin, or 2 x 4-pin, or 4 x 2-pin, or 1x4-pin and 2 x 2-pin)
Two IIC (with one integrated Boot Strap Controller)
One SPI serial interface 4-channel DMA � available for internal and external use
Programmable interrupt controller with 10 external inputs, 64 internal inputs
Programmable timers
General-purpose I/O (64)
Support for JTAG board testing and RISCWatch� debugger
