BCM2055 Ver la hoja de datos (PDF) - Broadcom Corporation
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BCM2055 Datasheet PDF : 2 Pages
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BCM4705
®
Brief
Intensi-fi™ Gigabit Ethernet Draft-802.11n Processor
FEATURES
• Advanced 500 DMIPS/300-MHz MIPS32® core
• 4-way set associative 32-KB I-Cache
• 2-way set associative 32-KB D-Cache
• 4-KB Read-Ahead Cache
• MMU/TLB support for Linux®
• Advanced Gigabit Ethernet MAC
• Hardware TCP segmentation and Checksum offload
• GMII, RGMII, and MII PHY connectivity
• Two USB2.0 High-speed host ports
• One USB2.0 High-speed device port
• DDR SDRAM controller
• 16/32-bit DDR266 and 133-MHz SDRAM support
• 8 MB to 512 MB capacity
• Support for 8/16/32-bit wide memory devices
• PCI 2.3 Host interface (32 bit/33–37 MHz)
• Supports four PCI bus masters
• Optional 5V-tolerant operation (PCI 2.2 support)
• Advanced GPIO interface
• All GPI supports interrupt triggering capability
• Dual RS232 UART
• 2.4W Low-power design
SUMMARY OF BENEFITS
• Turnkey hardware and software platform
• Extremely rapid development of draft 802.11n Wi-Fi® Access
Point/Routers.
• Full Linux router stack and software package
• Flexible single-band, dual-band, and simultaneous dual-band
platform support
• MIMO configurations supported
• 2x2, 2.4 GHz
• 2x2, 2.4/5.0 GHz
• 3x3, 2.4 GHz
• 3x3, 2.4/5.0 GHz
• Maximum performance and high throughput
• Gigabit Ethernet LAN speeds
• Over 190 Mbps TCP/IP Gigabit Ethernet to Wi-Fi bridging in
single-band configuration
• Over 250 Mbps TCP/IP Gigabit Ethernet to Wi-Fi bridging in
simultaneous dual-band configuration
• Flexible architecture for low cost and alternative designs
• Allows connection to external 10/100 switches for ultra low
cost applications
• Platform expansion through USB2.0
• Platform expansion through PCI/Cardbus
• Networked Attached Storage (NAS)
• Easily build NAS routers with included NAS software module
BCM4705 System Diagram
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