AR7 Chipset – The Heart of a SpeedStream 4200

AR7 Chipset – The Heart of a SpeedStream 4200

The Texas Instruments AR7 device (TNETD7300) is a fully integrated single-chip Asymmetric Digital Subscriber Line (ADSL) bridge/router solution, integrating a broadband communications processor and peripherals, ADSL physical layer, ADSL line driver, USB physical layer, Ethernet physical layer and power management for use in Customer Premise Endpoint (CPE) modems for residential and small-office applications. The TNETD7300 can be used in modems ranging from simple Ethernet bridges to integrated access devices (IADs) and Residential Gateways.

The TNETD7300 includes features to enhance ADSL throughput when connected to a compatible central office ADSL modem. ADSL+ provides downstream transmission rates far beyond the 12Mb/s limit of S=1/2. Extended-Reach (ERADSL) and All Digital Loop ADSL allow 384-kb/s/128-kb/s service to be provided on loops as long as 6.4km. These features allow the TNETD7300 to greatly surpass the downstream throughput limit of 8 Mb/s and the 5.3km reach limits generally seen in previous ADSL modems, thus granting ADSL service providers access to a larger subscriber pool without requiring replacement of the local loop infrastructure.

The TNETD7300 includes a new VLYNQ™ peripheral bus extension that allows VLYNQ-enabled devices to be gluelessly interfaced to TNETD7300 for advanced applications such as voice-over-packet (VOP) telephony or ADSL-to-WLAN (802.11) bridging and interfaces such as USB 2.0 and PCI.

MIPS™ 32-Bit 160-MHz Reduced Instruction Set Computer (RISC) Processor
Two IEEE Std. 802.3 Ethernet Memory Access Controllers (MACs) With One External Media Independent Interface (MII)
– IEEE Std. 802.1p/q support
– 10-Mbit/s and 100-Mbit/s (half or full-duplex)
– Hardware flow control
– Address filtering (Unicast, Multicast, Broadcast, or Promiscuous Mode)

One Integrated IEEE Std. 802.3/802.3u Ethernet PHY
– 10-Mbit/s and 100-Mbit/s (half or full-duplex)
– Autonegotiation and parallel detect capability

Two VLYNQ™ High-Speed Point-to-Point Serial Interfaces

TMS320C62x™ ADSL PHY Subsystem with Integrated Transceiver, Coder/Decoder (Codec), Line Driver, and Line Receiver
– Single-Core DSP subsystem
– Integrated power management
– Supports most common POTS and ISDN ADSL standards and signaling methods
– ITU 992.1 (G.dmt) Annex A, B, C
– ITU 992.2 (G.lite)
– ITU 992.3 ADSL2 (G.dmt.bis)
– ITU 992.4 ADSL2 (G.lite.bis)
– ANSI T1.413 issue
– Includes ADSL+, Extended-Reach ADSL, All-Digital-Loop ADSL capabilities, Reed-Solomon with S = 1/2

Ethernet MII Serial Management Interface (MDIO) Flexible Universal Serial Bus (USB) Interface Function
– USB 1.1 compliant slave interface

One Flexible Serial Interface (FSER)
– Configurable as a UART with Software Flow Control or as an Inter-Integrated Circuit (IIC) Master Interface

One Four-Channel General-Purpose Direct-Memory Access (DMA) Engine

Reset Controller

Other Peripherals
– JTAG Test Access Port Controller for IEEE Std.1149 Boundary Scan
– Emulation JTAG (EJTAG) for MIPS
– DSP JTAG interface for debug

Device Packaged in 324-Terminal Thermally-Enhanced Plastic Ball Grid Array (GDW)

Asynchronous Transfer Mode (ATM) Segmentation and Reassembly (SAR) Sublayer
– ATM Adaptation Layer 5 (AAL5) and Operations, Administration and Management (OAM)
– ATM Adaptation Layer 0 (AAL0) support in hardware
– ATM Adaptation Layer 1, 3 and 4 (AAL1, AAL3/4) support via software

ATM Quality of Service (QoS)
– Programmable cell scheduling for AAL5 SAR
– Support for Constant Bit Rate (CBR), Real-Time Variable Bit Rate (VBR-rt), Non-Real-Time Variable Bit Rate (VBR-NRT), and Unspecified Bit Rate (UBR+)

ATM Transmission Convergence
– Automated Idle Cell-Based BERT
– Support for HDLC over ADSL

For more information visit the Texas Instruments Website.

Other Devices based on the Texas Instruments AR7::

  • Actiontec GT701
  • Asus AAM6010EV : TNETD7300GDU, 2Mb FLASH, 8Mb SDRAM
  • AVM Fritz!Box
  • Aztech DSL-600E: 2Mb FLASH, 8Mb SDRAM
  • Aztech DSL600ER: 2Mb FLASH, 8Mb SDRAM, 88E6060 Switch
  • Aztech DSL600EW: 4Mb FLASH, 16Mb SDRAM, 88E6060 Switch, TNETW1130
  • D-Link DSL-xxxT
  • D-Link DVA-G3342SB (DSL board only)
  • ECI B-FOCuS combo 352+, B-FOCuS Router 312+A
  • devolo dsl+ 1100 duo, dsl+ 1100 LAN
  • Efficient Networks, Inc / ENI SpeedStream 5100
  • LevelOne FBR-1416A: 2Mb FLASH, 8Mb SDRAM, 88E6060 Switch
  • Linksys ADSL2MUE 4MB Flash, 16MB ram, USB + 1 Ethernet only
  • Linksys AG241
  • Linksys WAG200Gv1
  • Linksys WAG54Gv2 and v3
  • Linksys WAG354Gv1,v2 and v2.1
  • Linksys WRTP54G
  • Linksys HG200
  • Netgear DG834(G) (Version 1, 2 and 3 have AR7 Chipset, version 4 has Broadcom chipset)
  • Paradyne (Zhone) Hotwire 6210-A2, 6211-A2, and 6381-A2 (OEM Asus AAM6010EV)
  • Siemens SX541 uses realtime OS (SOHO.BIN) and BRN Boot Loader from the Broad Net Technology, Inc.
  • Siemens SpeedStream 4100/4200
  • Sitecom WL-108
  • Solwise ADSL-SAR-600E
  • Sphairon Turbolink JDR454WB WLAN ADSL Modem (2548 937939)
  • T-Com Sinus 154 DSL SE
  • T-Com Sinus 154 DSL Basic SE
  • T-Com Sinus 154 DSL Basic 3
  • T-Com Speedport W501V
  • T-Com Speedport W701V
  • Westell WireSpeed 2000 and ProLine 6100
  • ZyXEL Prestige 660 Series ADSL 2+ Modem/Router – Prestige 660M-67 (Arcor-DSL Speed-Modem 50Z)
  • 3com Officeconnect 3crwdr100x series 3com 3rcwdr100x series ADSL firewall router
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