OVERVIEW
Broadcom’s BCM1122 is a state-of-the-art processor solution targeted at the fast-growing networking, wireless communications, storage, server/networking appliance and imaging markets. The BCM1122 offers industry-leading performance, high functional integration, and low power levels in a small package required by next-generation networking applications.

FEATURES
• 400 MHz MIPS64™ CPU
    • 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 memory-coherent bus (ZBbus)
    • Connects the CPU, L2 cache, memory controller and I/O bridges
    • Runs at half the CPU core clock; 256 bits wide
• On-chip L2 cache
    • 128KB, shared by CPU and I/O bridges
    • Four-way associative, ECC protected
    • Ways can be removed to provide fast on-chip RAM
• DDR memory controller
    • One channel with a 64-bit data bus plus ECC
    • Runs at 100 MHz clock rate, 200 Mbps data rate
    • Support for DDR SDRAM, SGRAM, and FCRAM
• High-speed packet interfaces
    • One 10/100/1000 Ethernet MAC, and one 10/100 Ethernet MAC
    • 802.3 compliant with option to configure MAC into packet FIFO
• PCI interface
    • 32-bit, 33/66 MHz PCI 2.2
    • Host bridge or target device
• Integrated system I/O
    • Generic I/O for direct connect to boot ROM, FLASH, fast peripherals/ASICs
    • SMBus serial configuration interface
    • PCMCIA control interface
    • Two serial interfaces
• Extensive, on-chip debug features
• 4W @ 400 MHz
• Software-compatible with BCM1250 and BCM1125H
• Support for leading operating systems including VxWorks®, Linux®, NetBSD, QNX and OSE
• Evaluation board platform available with tools, firmware and software drivers

APPLICATIONS
• The BCM1122s world-class performance, power efficiency and integration makes these processors ideal for a broad variety of systems including:
    • Networking: routers, switches
    • Control plane processing
    • Line cards
    • Broadband access: DSLAM, CMTS, BRAS
    • Wireless base stations
    • Storage: RAID controllers, NAS controllers, HBAs
    • Web/networking/caching appliances
    • Imaging: printers, copiers