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