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BCM1255 参数 Datasheet PDF下载

BCM1255图片预览
型号: BCM1255
PDF下载: 下载PDF文件 查看货源
内容描述: 双核64位MIPS处理器 [DUAL-CORE 64-BIT MIPS PROCESSOR]
分类和应用:
文件页数/大小: 2 页 / 117 K
品牌: BOARDCOM [ Broadcom Corporation. ]
 浏览型号BCM1255的Datasheet PDF文件第2页  
BCM1255
®
DUAL-CORE 64-BIT MIPS
®
PROCESSOR (NEW!)
FEATURES
Two 64-bit MIPS
®
CPUs, scalable from 800 MHz–1.2 GHz
SUMMARY OF BENEFITS
Industry-leading performance
Quad issue in-order pipeline with dual-execute and dual-memory
pipes
Enhanced skew pipeline enables a zero load-to-use penalty
32-KB instruction cache and 32-KB data cache (ECC protected)
Fast on-chip multiprocessor bus
Connects the CPUs, L2 cache, memory controller, and I/O
bridges
Runs at half the CPU core frequency and is 256 bits wide
On-chip L2 cache
512 KB shared by two CPUs and I/O agents
Eight-way associative, ECC protected
Any way can be programmed as fast on-chip RAM
DDR memory controller
Memory bandwidth as high as 100 Gbps
Configurable as 2x64-bit or 4x32-bit wide channels
Runs up to 400-MHz clock rate, 800-MHz data rate
Support for DDR1, DDR2, and FCRAM
Integrated network and system I/O
Four Gigabit-Ethernet MACs configurable as packet FIFO
interfaces
64-bit PCI-X interface at 133 MHz
Generic I/O for direct connect to boot ROM, flash memory
Two SMBus serial configuration interfaces
PCMCIA control interface and up to 16 interrupts
Four UART interfaces
On-chip debug capability
EJTAG
Bus trace unit (internal logic analyzer)
Support for leading operating systems, including VxWorks
®
,
Linux
®
, QNX
®
, and NetBSD
Evaluation board platform available with samples (includes
tools, firmware, and software drivers)
VPN/Firewall Application
DRAM
2.5 Dhrystone MIPS/MHz per CPU
10 Million packets per second of L3 forwarding
128 Gbps on-chip bus bandwidth, with 100 Gbps memory
bandwidth and 31 Gbps 1/0 bandwidth
Low-power dissipation of 13W @ 1 GHz
High functional integration, reducing overall system cost
Programming ease and flexibility based on MIPS64™
instruction set architecture (ISA)
Software compatible with BCM1250 and BCM112x
Broad tools and system software support
APPLICATIONS
Because of its world-class performance, power efficiency, and
integration, the
BCM1255
processor is ideal for a broad variety of
applications, including:
Enterprise-class routers and switches
Multifunction security platforms (VPN/SSL/IDS)
Compact NAS platforms
SAN routers/gateways/switches
Video servers and systems
Storage System or Video Server
DRAM
SATA Disk Drives
...
GMII
Control path
GMII
ServerWorks
SATA
Bridge
TM
BCM1255
GMII
BCM1255
PCI-X
Data path
FIFO
BCM5841
4 x GMII
2 Gbps Full-Duplex IPSec