MV64420 参数 Datasheet PDF下载

Communications

Controllers

Discovery

™

LT

MIPS

®

System Controller

MV64420

PRODUCT OVERVIEW

The Marvell

¨

Discovery

ª

LT MV64420 system controller is the industryÕs most powerful and cost-effective

architecture for MIPS

¨

CPU-based systems. Building upon MarvellÕs industry-standard Discovery platform, the

Discovery LT devices incorporate an innovative crossbar architecture, advanced communications peripherals

and performance-tuned interfaces, setting new technology benchmarks for performance and integration. The

Discovery LT MV64420 system controllerÕs high-performance crossbar switch architecture with any-to-any

connectivity, allows system designers to develop high-performance, scalable systems. The Discovery LT MV64420

device supports both the traditional SysAD and the extended PMC-Sierra

¨

MIPS RM7000x bus protocols. Additionally,

the Discovery LT product integrates two on-chip XOR engines to accelerate RAID applications. The Marvell

Discovery LT system controllers are optimally designed for a broad range of applications, from sophisticated

routers, switches and wireless base stations to high-volume, cost-sensitive storage and laser printer applications.

MIPS (SysAD) @ 133/166 MHz

4 DMA

2 XOR

CPU Interface

DDR

72-bit @ 333 MHz

UARTS, TWSI

GPIO, MPSC,

TWSI, Int,

Timers

Device

32-bit @ 133 MHz

10/100/1000 Mbps

GbE

PCI-X

64-bit @ 133 MHz

Fig 1. Discovery LT MIPS System Controller (MV64420) Block Diagram

FEATURES

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MIPS CPU interface with up to 166 MHz CPU bus frequency

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Supports traditional SysAD and the extended PMC-Sierra MIPS

RM7000x bus protocols

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Crossbar switch architecture with up to 100 Gbps aggregate throughput

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Two on-board XOR engines

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64-bit PCI/PCI-X interface with 66 MHz/133 MHz operation offering

complete host PCI bridging

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Gigabit Ethernet (GbE) Media Access Controller (MAC) with MII, RGMII,

GMII support

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72-bit DDR SDRAM controller at a clock rate of 166 MHz

(333 Mbps data rate)

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32-bit high-speed device controllerÑup to 133 MHz clock rate

BENEFITS

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Supports all leading 64-bit MIPS CPUs including PMC-Sierra RM7000C

and RM79xx

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Enable the highest performing MIPS subsystems

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Provide wire-speed performance between controller blocks to enable

concurrent, non-blocking connectivity

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Offloads CPU to accelerate RAID applications

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Preserve legacy PCI investment and provide easy migration to future

PCI-X based platforms, more than 16 Gbps aggregate throughput

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Enable greater data throughput

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Supports cost-effective, high-bandwidth DDR SDRAM memory with

full ECC protection

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Connectivity to boot FLASH as well as high throughput peripherals

as SyncBurst SRAM or custom ASICs