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Asymmetric digital subscriber line (ADSL) is used to provide cost-effective, high speed local loop access for Internet and other applications where data flows downstream to end users faster that it does upstream from end users. ADSL provides asymmetric transmission over one pair of copper telephone wires with downstream data transmission rates ranging from 32 Kbps to 1.1 Mbps. ADSL also allows the telephone line to be used simultaneously for voice and data transmission.
GlobeSpan's ADSL chip sets are designed to meet the ANSI standard specification T1.413 for the 8 Mbps DMT line code configuration as well as the International Telecommunications Union standard G.9921 for 8 Mbps DMT line code configuration (commonly called G.dmt), and G.992.2 for the 1.5 Mbps DMT line code configuration (commonly called G.lite). Our DMT line configuration is also standard compliant for ADSL over ISDN, or Integrated Services Digital Network, for use in Europe and Japan.
Quad ADSL CO Chip Set, G7266
The Titanium Fourte Asymmetric Digital Subscriber Line (ADSL) chip set is a fully programmable high-density solution for central office equipment DSLAM applications. This fully programmable solution is the only central office ADSL chip set to address all of the unique market requirements for ADSL deployment within North America, Europe and Asia. The Fourte chip set standard support includes ITU G.992.1 (G.DMT), ITU G.992.2 (G.lite) and ANSI T1.413 issue 2 used throughout the world, as well as G.992.1 Annex B for Europe, G.992.2 Annex C for Japan and ANSI TR-59 (CAP).The Fourte chip set is optimized for central office applications where superior performance, field proven interoperability, high port density and low power are critical requirements. Each of the four channels operates independently enabling multiple line codes to be supported simultaneously on a single line card.
Powered by GlobeSpan's seventh generation architecture, the full programmability and field upgradeability of the chip set delivers investment protection against product obsolescence, and provides a significant time-to-market advantage for system equipment providers.
To accelerate time to market, complete transceiver reference designs and a modular evaluation and development platform are available.
Features and Benefits
Four independent ADSL channels supported by a 2-chip transceiver, consisting of a 356 TEPBGA DSP with integrated framer and a 196 PBGA AFE chip
Standards compliant chip set supports: ITU G.992.1 (G.DMT), ITU G.992.2 (G.Lite), ANSI T1.413 i2, Annexes A, B, C and CAP (TR-59)
Programmable DSP architecture enables software upgradeable feature enhancements, performance improvements, and on the fly interoperability
Quad Channel Analog Front End (AFE), optimized for ADSL-CO applications where density and power dissipation are of primary concern, minimizes external analog filter requirements
Downstream DMT data rate from 32 kb/s to 8 Mb/s
Upstream DMT data rate from 32 kb/s to 1 Mb/s
Integrated, multifunctional framer supports ATM UTOPIA Level 2 and Synchronous Bit Mode
Glueless interface to popular communications processors and SAR chips
A single oscillator supports all speeds
Boundary-scan testing compliant to IEEE Std 1149.1 Joint Test Action Group (JTAG)Applications
Digital Subscriber Line Access Multiplexer (DSLAM)
Transmission of ADSL with undisturbed POTS on the same telephone line
Transmission of ADSL with undisturbed ISDN (2B1Q or 4B3T) on the same line
Transmission of ADSL co-existing in the same binder as Japan's TCM-ISDN
Business and residential data access services
Remote access servers
VoDSL Support
Titanium Fourte RT
Quad ADSL DLC/MDU Chip Set, G7266RTThe Titanium Fourte RT Asymmetrical Digital Subscriber Line (ADSL) chip set is a fully programmable solution optimized for Digital Subscriber Line Multiplexers (DSLAM) for Remote Terminal (RT) applications such as Digital Loop Carriers (DLC) and Multiple Dwelling Units (MDU) where extremely low power, very high port density, and field proven interoperability are critical requirements. The chip set comprises a four channel DSP tightly coupled with four Analog Front End (AFE) ICs that feature a fully integrated line driver optimized for short loop applications.
This new four-channel chip set solution supports all relevant ADSL standards including ITU G.992.1 (G.DMT), ITU G.992.2 (G.lite) and ANSI T1.413 issue 2. Each channel operates independently, enabling multiple line codes to be supported simultaneously on a single line card.
Powered by GlobeSpan's seventh generation DSP architecture, the full programmability and field upgradeability of the chip set delivers investment protection against product obsolescence, and pro-vides a significant time-to-market advantage for system equipment providers.
To accelerate time to market, complete transceiver reference designs and a modular evaluation and development platform are available.
Features and Benefits
Four independent ADSL channels supported by a 5-chip transceiver, consisting of a 356-pin TEBGA DSP with integrated framer and four 28-pin SSOP AFE with integrated line driver
Standards compliant chip set supports multiple implementations: ANSI T1.413 i2, ITU G.992.1 (G.dmt), ITU G.992.2 (G.lite)
Programmable DSP architecture enables software upgradeable feature enhancements, performance improvements, and on the fly interoperability
Four single-channel Analog Front Ends (AFEs), optimized for ADSL short loop applications, minimize external analog filter requirements
Downstream DMT data rate up to 8 Mb/s
Upstream DMT data rate up to 1 Mb/s
Integrated, multifunctional framer supports ATM UTOPIA Level 2
Glueless interface to popular communications processors and SAR chips
A single oscillator supports all speeds
Boundary-scan testing compliant to IEEE Std 1149.1 Joint Test Action Group (JTAG)Applications
Digital Subscriber Line Access Multiplexer (DSLAM)
Digital Loop Carrier (DLC) and Multiple Dwelling Unit (MDU)
Transmission of ADSL with undisturbed POTS on the same telephone line
Business and residential data access services
Remote access servers
VoDSL Support
