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MPU touts increased speed

Posted: 11 Apr 2005 ?? ?Print Version ?Bookmark and Share

Keywords:applied micro circuits? amcc 440gr? powerpc? microprocessor? mpu?

Applied Micro Circuits Corp. says its new AMCC 440GR PowerPC-based microprocessor (MPU) offers increased processor speed, memory performance and integrated dual Fast Ethernets. Aimed at line card, system control and multi-radio systems, the MPU operates at a clock frequency of up to 667MHz.

The 440GR requires one-third less power than any other member of the 440 family, making it ideal for low power applications. The device's dual Fast Ethernet controllers function at full or half duplex at 10 Mbps/100Mbps. They are configurable as one MII, two RMII, or two SMII ports with a packet reject interface. Along with a 65 percent increase in performance over AMCC's 405GPr, the 440GR also supports double data rate memory (DDR266) with a peak bandwidth of 1.1Gbps.

Optional ECC support is also provided. In addition, the processor supports a 32bit PCI revision 2.2 compliant interface with multiple read pre-fetch and write post buffers and the ability to boot the processor from PCI bus memory. The 440GR's external bus controller provides support for up to 6 ROM, EPROM, SRAM, Flash or slave peripheral I/O devices. The unit also incorporates a DMA controller with four independent channels supporting memory-to-memory, peripheral-to-memory and memory-to-peripheral block transfers.

Other on-chip peripherals include two IIC controllers, one bootstrap controller (BSC) and one SPI Serial Communications Port (SCP), up to 10 external interrupts, general purpose timers, 53 GPIO pins and four UARTs to support various functions in user applications. The AMCC 440GR will be shipping in the second quarter of 2005. Suggested resale pricing is $44.49 for the 533MHz and $55.62 for the 667MHz processors.

- Marty Gold

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