dr a ft rt2880 - pudn.comread.pudn.com/downloads123/ebook/522763/rt2880.pdf• scatter-gather dma...

– Ideal solution to add 802.11n to broadband platforms – Cost effective, High performance, 802.11n AP/Router WLAN SoC – Simple 802.11n integration to Ethernet equipped device Overview RT2880 MIMO Wireless Access Point/Router/iNIC SoC 802.11n 2T3R Solution featuring MIMObility™ Technology 802.11n MAC/BBP Interfaces • 300 Mbps PHY Rate Support • 1T1R/1T2R/1T3R/2T1R/2T2R/2T3R Modes • Reverse Data Grant (RDG) Support • Compressed Block ACK • Hardware Frame Aggregation • Packaging: 17mm x 17mm BGA – 292 MIPS4KEc Core • 266 MHz • 16K I Cache, 16K D Cache Gigabit Ethernet MAC interface • RGMII/MII Interfaces Support • Scatter-Gather DMA • Interrupt Mitigation • IEEE 802.3x Flow Control • Full/Half Duplex • High/Low Priority Queues 33/66Mhz PCI Host Controller • Embedded PCI Arbiter • 2 PCI Devices Support • Scatter-Gather DMA • Interrupt Mitigation 2.4 and 5 GHz Transceiver Chip • Single Chip with Direct Conversion Transceivers • Three receiver paths and two transmit paths • Low Noise Filter • High Linearity • Integrated Channel-Selection Filters • Integrated Reconstruction Filters • Integrated Low Dropout Regulators • Single Supply 3.0 to 3.6 V Operation • RT2820 for 2.4 GHz Band • RT2850 for 2.4/5 GHz Bands • QFN-76 9mm*9mm MAC/BBP Integrated Chip US Office 20833 Stevens Creek Blvd., Suite 200 Cupertino, CA 95014 Tel: 408.725.8070 | Fax: 408.725.8069 www.ralinktech.com © 2006, Ralink Technology Corporation. Ralink Technology Corporation, MIMObility™ and Range-OVERDRIVE™, Packet Overdrive™ are registered trademarks of Ralink Technology Corporation. All other trademarks are trademarks of their respective holders. Ralink Technology Corp. Taiwan Headquarters 4F, No. 2, Technology 5th Road Hsin-Chu Science Park, Hsin-Chu, Taiwan 新竹市科學園區科技五路二號四樓 Tel: 03-5678868 | Fax: 03-5678818 The RT2880 SOC combines Ralink’s 2T3R MAC/BBP, a 266-MHz Mips4KEc CPU core, a Gigabit Ethernet MAC, and a PCI host/device, to enable a multitude of high performance and cost-effective draft 802.11n applications. The RT2880 has two RF companion chips, the RT2820 for 2.4G-band operation and the RT2850 for dual band 2.4G or 5G operation. In addition to the traditional AP/router application, the chipset can be implemented as an WLAN “intelligent” NIC, drastically reducing the load on the host SOC, such as DSL/Cable or Multimedia Applications processors. WLAN iNIC can be used as a simple Ethernet device for easy porting and guaranteed draft 802.11n compliant WLAN performance without the need to upgrade to an expensive host SOC. RT2880 Architecture Mips4KEc (266 Mhz) 16K I Cache 16K D Cache Rbus (133Mhz) Flash/ SRAM/SDRAM Controller Frame Engine PCI Host/Device 802.11n 2T3R MAC/BBP UART/GPIO/ Timer/PCM/SPI/ BIST/Boot ROM/ Clock Gen/ System Ctrl RGMII/MII X 1, MDC/MDIO 32 bits, 33/66Mhz Ralink BBP/RF interface 8/16 bits, SRAM/Flash x2 16b/32 bits, SDRAM x2 UARTx2, SPI, PCM, GPIO, I2C, JTAG PalmBus D R A F T

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Page 1: DR A FT RT2880 - pudn.comread.pudn.com/downloads123/ebook/522763/RT2880.pdf• Scatter-Gather DMA • Interrupt Mitigation • IEEE 802.3x Flow Control • Full/Half Duplex • High/Low

– Ideal solution to add 802.11n to broadband platforms

– Cost effective, High performance, 802.11n AP/Router WLAN SoC

– Simple 802.11n integration to Ethernet equipped device

Overview

RT2880MIMO Wireless Access Point/Router/iNIC SoC802.11n 2T3R Solution featuring MIMObility™ Technology

802.11n MAC/BBP Interfaces• 300 Mbps PHY Rate Support• 1T1R/1T2R/1T3R/2T1R/2T2R/2T3R Modes• Reverse Data Grant (RDG) Support• Compressed Block ACK• Hardware Frame Aggregation• Packaging: 17mm x 17mm BGA – 292

MIPS4KEc Core• 266 MHz• 16K I Cache, 16K D Cache

Gigabit Ethernet MAC interface• RGMII/MII Interfaces Support • Scatter-Gather DMA• Interrupt Mitigation• IEEE 802.3x Flow Control• Full/Half Duplex• High/Low Priority Queues

33/66Mhz PCI Host Controller• Embedded PCI Arbiter• 2 PCI Devices Support• Scatter-Gather DMA• Interrupt Mitigation

2.4 and 5 GHz Transceiver Chip• Single Chip with Direct Conversion Transceivers• Three receiver paths and two transmit paths• Low Noise Filter• High Linearity• Integrated Channel-Selection Filters• Integrated Reconstruction Filters• Integrated Low Dropout Regulators• Single Supply 3.0 to 3.6 V Operation• RT2820 for 2.4 GHz Band• RT2850 for 2.4/5 GHz Bands• QFN-76 9mm*9mm

MAC/BBP Integrated Chip

US Office20833 Stevens Creek Blvd., Suite 200Cupertino, CA 95014Tel: 408.725.8070 | Fax: 408.725.8069www.ralinktech.com

© 2006, Ralink Technology Corporation. Ralink Technology Corporation, MIMObility™ and Range-OVERDRIVE™, Packet Overdrive™ are registered trademarks of Ralink Technology Corporation. All other trademarks are trademarks of their respective holders.

Ralink Technology Corp.

Taiwan Headquarters4F, No. 2, Technology 5th RoadHsin-Chu Science Park, Hsin-Chu, Taiwan新竹市科學園區科技五路二號四樓Tel: 03-5678868 | Fax: 03-5678818

The RT2880 SOC combines Ralink’s 2T3R MAC/BBP, a 266-MHz Mips4KEc CPU core, a Gigabit Ethernet MAC, and a PCI host/device, to enable a multitude of high performance and cost-effective draft 802.11n applications. The RT2880 has two RF companion chips, the RT2820 for 2.4G-band operation and the RT2850 for dual band 2.4G or 5G operation. In addition to the traditional AP/router application, the chipset can be implemented as an WLAN “intelligent” NIC, drastically reducing the load on the host SOC, such as DSL/Cable or Multimedia Applications processors. WLAN iNIC can be used as a simple Ethernet device for easy porting and guaranteed draft 802.11n compliant WLAN performance without the need to upgrade to an expensive host SOC.

RT2880 Architecture

Mips4KEc(266 Mhz)

16K I Cache16K D Cache

Rbus (133Mhz)

Flash/SRAM/SDRAM

Controller

Frame EnginePCIHost/Device

802.11n 2T3RMAC/BBP

UART/GPIO/Timer/PCM/SPI/BIST/Boot ROM/

Clock Gen/System Ctrl

RGMII/MII X 1,MDC/MDIO32 bits, 33/66MhzRalink BBP/RF

interface