The early AR5 was a multi-chip ADSL solution.
- TNET4310 MIPS32 4Kc
- TNET4320 MIPS32 4Kc
- TNET4400 MIPS32 4Kc
- TNETD5301 MIPS32 4Kc
- TNETD5310 MIPS32 4Kc
- TNETD5320 MIPS32 4Kc
- SpeedStream 5200 modem/router
The Texas Instrument AR7 is the fully integrated single-chip ADSL CPE access router solution. The AR7 combines a MIPS32 processor, a DSP-based digital transceiver, and an ADSL analog front end.
- Integrated high performance MIPS 4KEc 32-Bit RISC processor
- ADSL PHY subsystem based on TI C62x DSP, with integrated transceiver, codec, line driver, and line receiver
- Hardware accelerated ATM SAR
- Integrated IEEE 802.3 PHY
- Two IEEE 802.3 MACs with integrated Media Independent Interface (MII) and Quality of Service (QoS)
- Integrated USB 1.1 compliant transceiver (slave only?)
- Two VLYNQ interfaces for compatible high-speed expansion devices
- Two 16c550 compatible UARTs
- EJTAG, GPIO and FSER interfaces
- 4Kb PROM (0xBFC00000) and 4Kb RAM (0x80000000) on the chip for boot purposes
- 324 BGA with 1.0-mm ball pitch
- AR7WRD (TNETD7300GDU) is an AR7 option with a interface for WiFi card.
- AR7VWI : DSL + VoIP + Wireless
- AR7V : DSL + VoIP
TI does not provide detailed technical documentation for this SoC. Some details are known from the GPL-ed Linux sources.
Another source is a TI OMAP documentation. It seems, AR7 SoC peripherials is very close to the OMAP16xx and OMAP730 application processors , but MIPS instead ARM9-based.
The "GPL source code" as provided by the various vendors of TI AR7 (with linux) devices is incomplete, since TI apparently refuses to publish the source code to some of their core kernel modifications, such as LZMA (de)compression of the zImage. The gpl-violations.org project is actively trying to resolve this issue.
If you go through the GPL releases for AR7 devices by different vendors, you can find all the sources for the AR7 board. Here's a list:
|Network driver||In almost every vendor GPL release|
|DSL driver||Netgear DG834(G) V1.0.5||Hidden in patch-knl file|
|Wifi driver||Linksys WAG54G v2 1.00.19-UK||src/router/ti_ap/AP-DK188.8.131.52.tar.gz|
|USB driver||Netgear DG834(G) V1.0.5||Hidden in patch-knl file|
There is a specifically targeted #ar7 irc channel on Freenode where those devoted to hacking ar7 based architecture go to hang out.
AR7 family deploys unusual memory map. The AR7 chip has a small memory banks on the chip : 4Kb PROM (@0xBFC00000) and 4Kb RAM (@0x80000000) and memory block for the DSP (@unknown). The rest of the external memory banks are selectable with CS0..4. The FLASH is located at 0x90000000 (CS0) and RAM is located at 0x94000000 (CS1). Linux should define a non-contiguous memory and install an IRQ trampolines at the MIPS interrupt vectors.
TI TMS320C62x is a fixed-point Digital Signal Processor core. C62x is based on the VelociTI VLIW architecture developed by TI. C62x is a member of the TI C6000 family.
TI's VLYNQ is a low power, low pin-count serial communication interface that enables the extension of an internal bus segment to one or more external physical devices. The external devices are mapped into local, physical address space and appears as if they are on the internal bus. The external device must have a VLYNQ interface. The VLYNQ module serializes bus transactions in one device, transfers the serialized data via a VLYNQ port, and de-serializes the transaction in the external device. The VLYNQ interface is described in the following TI documents:
- SPRU768 - OMAP5912 Multimedia processor VLYNQ Serial Communications Interface Reference Guide
- SPRUE36 - TMS320DM644x DMSoC VLYNQ Port. User's guide.
Qemu with additional patches supports emulation of AR7 and some of its most important devices (serial ports, ethernet). It also includes a flash emulation and can run firmware of typical AR7 based DSL routers.
UR8 is integrated DSL/VoIP chipset. It combines MIPS 4KEc, C62x DSP (for DSL functions) and C55x DSP (for VoIP). MIPS CPU and C62x DSP operates at 360MHz and the C55x DSP at 180MHz.
Devices based on the Texas Instruments AR7
- Actiontec GT701
- AVM Fritz!Box
- Aztech DSL-600E
- Netgear DG834G
- D-link DSL-G604T
- ECI B-FOCuS combo 352+, B-FOCuS Router 312+A
- devolo dsl+ 1100 duo, dsl+ 1100 LAN
- Efficient Networks, Inc / ENI SpeedStream 5100
- Linksys ADSL2MUE
- Linksys AG241
- Linksys WAG54Gv2
- Linksys WAG354G
- Linksys WRTP54G
- Linksys HG200
- Paradyne (Zhone) Hotwire 6210-A2, 6211-A2, and 6381-A2
- 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
- Westell WireSpeed 2000 and ProLine 6100
- ZyXEL Prestige 660 Series ADSL 2+ Modem/Router - Prestige 660M-67 (Arcor-DSL Speed-Modem 50Z), article at OpenWrt
- 3com Officeconnect 3crwdr100x series 3com 3rcwdr100x series ADSL firewall router
and many more
- Texas Instrument AR7 ADSL Router SoC
- QEMU based AR7 emulation, Linux based AR7 firmware
- Linksys GPL Code Center, ADSL2MUE and WAG54G GPL sourcecode
- OpenWRT AR7 Port
- Datasheet http://focus.ti.com/pdfs/bcg/ar7_nsp_prod_brief.pdf
- TNETV1061 a VoIP chip from TI, including 213MHz MIPS32 core and a TMS320C55x 150MHz DSP