bcm94705nr Broadcom Corp., bcm94705nr Datasheet
bcm94705nr
Manufacturer Part Number
bcm94705nr
Description
Bcm4705 - Intensi-fi 802.11n Gbe Processor
Manufacturer
Broadcom Corp.
Datasheet
1.BCM94705NR.pdf
(2 pages)
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Advanced 500 DMIPS/300-MHz MIPS32
• 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 offload (TSO)
• 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
INTENSI-FI
F E A T U R E S
®
GIGABIT ETHERNET DRAFT-802.11N PROCESSOR
®
®
SDRAM
®
core
BCM4705 System Diagram
LAN/WAN Ports
BCM53115
BCM4705
FLASH
BCM4705
BCM4705
LEDs
BCM4322
BCM4321
BCM4705
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Brief
Flexible single-band, dual-band, and simultaneous dual-band
platform support
Maximum performance and high throughput
• Gigabit Ethernet LAN speeds
• Over 170 Mbps TCP/IP Gigabit Ethernet to Wi-Fi
• Up to 250 Mbps TCP/IP Gigabit Ethernet to Wi-Fi bridging in
Turnkey hardware and software platform
• Extremely rapid development of draft 802.11n Wi-Fi Access
• Full Linux router stack and software package
Two- and three-antenna MIMO configurations supported
Flexible architecture for low cost and alternative designs
• Allows connection to external 10/100 switches for ultra low
• Platform expansion through USB2.0
• Platform expansion through PCI/Cardbus
Networked Attached Storage (NAS)
• Easily build NAS routers with included NAS software module
Turnkey hardware and software platform
• Extremely rapid development of draft 802.11n Wi-Fi Access
• Full Linux router stack and software package
Balun
Balun
Balun
Balun
Balun
Balun
Balun
Balun
in single-band configuration
simultaneous dual-band configuration
Point/Routers.
cost applications
Point/Routers.
S U M M A R Y O F B E N E F I T S
nFEM
®
bridging
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bcm94705nr Summary of contents
Page 1
INTENSI-FI GIGABIT ETHERNET DRAFT-802.11N PROCESSOR • Advanced 500 DMIPS/300-MHz MIPS32 • 4-way set associative 32-KB I-Cache • 2-way set associative 32-KB D-Cache • 4-KB Read-Ahead Cache ® • MMU/TLB support ...
Page 2
USB2 Device Port USB2.0 Device 2-Port USB2 Host Ports USB2.0 EHCI 2 PCI 32/ Four PCI Master EBI/GPIO Flash, GPIOs Enclosure Management Thermal Management The Broadcom BCM4705 processor integrates a powerful 300 MHz/500 DMIPS (*estimated) MIPS32 core with ...