bcm1255 Broadcom Corp., bcm1255 Datasheet
bcm1255
Manufacturer Part Number
bcm1255
Description
Dual-core 64-bit Mips Processor
Manufacturer
Broadcom Corp.
Datasheet
1.BCM1255.pdf
(2 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Part Number:
bcm1255B0K900
Manufacturer:
BROADCOM
Quantity:
75
Company:
Part Number:
bcm1255B1K900
Manufacturer:
BROADCOM
Quantity:
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Part Number:
bcm1255BOK900
Manufacturer:
BROADCOM
Quantity:
30
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Two 64-bit MIPS
• 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 2 x 64-bit or 4 x 32-bit wide channels
• Runs up to 400-MHz clock rate, 800-MHz data rate
• Support for DDR1 and DDR2
Integrated network and system I/O
• Four Gigabit Ethernet MACs configurable as packet FIFO interfaces
• 64-bit PCI-X
• 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
and QNX
Evaluation board platform available with samples (includes tools,
firmware, and software drivers)
®
®
®
interface at 133 MHz
CPUs, scalable from 800 MHz–1.2 GHz
F E A T U R E S
DUAL-CORE 64-BIT MIPS
®
GMII
VPN/Firewall Application
2 Gbps Full-Duplex IPSec
BCM1255
BCM5841
DRAM
FIFO
BCM1255 Applications
®
, Linux
Control Path
Data Path
GMII
GMII
®
,
BCM1255
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Storage System or Video Server
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
Industry-leading performance
• 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
Low-power dissipation of 13W @ 1 GHz
High functional integration, reducing overall system cost
Programming ease and flexibility based on MIPS64
architecture (ISA)
Software-compatible with the BCM1250 and BCM112X
Broad tools and system software support
BCM1255
4xGMII
DRAM
and 31 Gbps 1/0 bandwidth
®
S U M M A R Y O F B E N E F I T S
PROCESSOR
PCI-X
SATA Disk Drives
A P P L I C A T I O N S
ServerWorks
SATA Bridge
®
instruction set
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bcm1255 Summary of contents
Page 1
... Software-compatible with the BCM1250 and BCM112X • Broad tools and system software support • 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 • ...
Page 2
... Ethernet protocol processing is not required), the GbE MACs can be configured as 8-bit and/or 16-bit packet FIFOs. The BCM1255 also integrates a 64-bit 133-MHz PCI-X local bus for direct connection to I/O devices. Four serial ports are available for use as UARTs for console ports ...