bcm1250 Broadcom Corp., bcm1250 Datasheet

bcm1250

Manufacturer Part Number

bcm1250

Description

Bcm1250 - Dual-core 64-bit Mips Processor With Gbe, Pci, Ht

Manufacturer

Broadcom Corp.

Datasheet

1.BCM1250.pdf (2 pages)

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Download datasheet (180Kb)

•

Two scalable 64-bit MIPS CPUs

• 600 MHz–800 MHz

• Quad-issue in order pipeline; dual execute, dual memory pipes

• Enhanced skew pipeline enables zero load-to-use penalty

• 32-KB instruction cache, 32-KB data cache

• Advanced branch predictors

Fast, on-chip multiprocessor bus

• Connects the CPUs, L2 cache, memory controller and I/O bridges

• Runs at half the CPU core frequency; 256 bits wide

On-chip L2 cache

• 512 KB, shared by both CPUs

• 4-way associative, ECC protected

• Ways can be removed to provide fast on-chip RAM

DDR memory controller

• wo channels, each with a 64-bit data bus plus optional ECC

• Runs up to 200 MHz clock rate, 400 MHz data rate

• Support for DDR SDRAM, SGRAM, and FCRAM

High-speed packet interfaces

• Three 10/100/1000 Ethernet MACs; 802.3 compliant

• Option to configure MACs into packet FIFOs

• Up to two packet FIFOs each capable of OC-48 data rates

PCI interface

• 32 bits, 33/66 MHz (PCI 2.2)

• Host bridge or target device

HyperTransport™ (formerly LDT) I/O interface

• Complies with HyperTransport standard for high-speed I/O fabric

• 500-MHz clock rate, double data rate, for 600-MHz CPUs; 600-MHz

• Peak bandwidth of 9.6 Gbps in each direction @ 600 MHz

• Supports double-ended fabrics (to link two BCM1250s)

Integrated system I/O

• Generic I/O for direct connect to boot ROM, flash

• Two SMBus serial configuration interfaces

• PCMCIA control interface

• Two serial interfaces

8–10W power dissipation @ 800 MHz

Support for leading operating systems including VxWorks

and NetBSD

Evaluation board platform available with tools, firmware and software

drivers

Extensive, on-chip debug features

clock rate for 800-MHz CPUs

HIGH-PERFORMANCE, INTEGRATED 64-BIT MULTIPROCESSOR

F E A T U R E S

Packet Processing Blade

4 10/100/1000 Ports

24 10/100 Ports

BCM5238

BCM5404

, Linux

SMII

10/100/1000BASE-T

Aggregation,

L2/L3 Switching

24 10/100 +2

Gigabit Ports

BCM5615

BCM5680

8 Port

•

BCM1250

Industry-leading performance

• Processing speed of up to 10 Mpps*

• 128-Gbps on-chip bus bandwidth; 50-Gbps memory bandwidth, 30-

Low power dissipation of 8–10W (@ 800 MHz)

High functional integration

Programming ease and flexibility based on MIPS64

Architecture (ISA)

Scalable multiprocessor chip and system architecture

Broad tools and system software support

For additional information on the BCM1250 evaluation boards, refer

to the BCM91250A and BCM91250E product briefs

*Based on internal Broadcom benchmark, using BCM1250 for standard

IPv4 L3 look-up/switching.

Due to the BCM1250's world-class performance, power efficiency and

integration, the processor is ideal for a broad variety of applications

including:

• Enterprise workgroup and backbone switches

• VPN switches/routers

• Multiservice access concentrators

• SAN routers/gateway/switches

• IP services/subscriber management platforms

• Web-server switches

• High-end firewall/intrusion detection devices

• Wireless basestations

PCI

GMII

Gbps total I/O bandwidth

S U M M A R Y O F B E N E F I T S

Deep Packet

Look-up, L4-L7

Processing

2,400 Mbps

IPSec

BCM5840

BCM1250

FPGA

HyperTransport

A P P L I C A T I O N S

DDR

DRAM

DDR

DRAM

BCM5823

Instruction Set

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