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ICs for Digital Cordless Telephones

Overview   Highlights   Block Diagram   Advanced Features   Products Brochure

TOTAL TELEPHONY SOLUTIONS™ PRODUCTS

The D36k and D56k Families of Integrated Digital Baseband processors for Digital Cordless Telephony are the most versatile in the industry. DSP Group's Cordless chipset portfolio includes to the most sophisticated Enhanced Digital Cordless with Multi-line, Multi-handset capability, DECT and a roadmap to emerging BluetoothTM and Broadband wireless home technologies.
Integration of the TeakLiteTM RISC DSP core into the Baseband chip enables software implementation of a variety of voice coders, and provides a flexible platform for a wide range of solutions. Both software and hardware are compatible for the entire range of products: from a basic cordless phone with Caller ID up to a fully featured solution including the integration of DSP Group's famous TRUESPEECH® TRIPLE RATE CODER® speech compression, Hands-free TRUE FULL DUPLEX SPEAKERPHONE®, Caller ID Type I&II detection, FLEXISPEECHTM variable speed playback, Voice Recognition, Background Noise Reduction and Speech Synthesis, as well as built-in Multi-line support. In addition, the integrated DSP also enables advanced functions such as an audio notch filter to remove TDD frame-related noise and a line echo canceller.
The family combines unique communication technology with the best telephony features at the most effective system cost.

Communication Standards

EDCTTM - Enhanced Digital Cordless Telephone, 2.4GHz and 5.8GHz Frequency Hopping Spread Spectrum, Multi-line, Multi-handset
DECT -Digital European Cordless Telephone, 1.9GHz Time Domain Duplexing, Multi-line, Multi-handset
BlueSTM -Bluetooth Cordless Telephone, 2.4GHz Time Domain Duplexing, Multi-line, Multi-handset

Full range of features based on the same architecture:

  • Basic model with Caller ID types I & II, and True Full Duplex Speakerphone® in the Handset
  • Fully featured model with DTAM, Handsfree True Full Duplex Speakerphone® and Caller ID types I & II
  • Two-line model with DTAM, Handsfree True Full Duplex Speakerphone® and Caller ID types I & II

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ICs for Digital Cordless


Overview   Highlights   Block Diagram   Advanced Features   Products Brochure


DE56k Family Highlights
  • Up to 140 MIPS TeakLiteTM DSP Core
  • Integrated Sigma-Delta CODECs and A/D
  • Integrated Amplifiers with volume control
  • Two-line support with all circuitry integrated on chip
  • LCD Controller
  • 1.8-3.6V Low power operation
  • Integrated DC/DC controller
  • USB 1.1, TDM, SPI, SIO, JTAG, Parallel and Serial Host interfaces
  • 2 cell battery operation with built in DC/DC converter
  • Optional embedded flash
DH24RF17B Highlights
  • 2.4GHz ISM band
  • Highly integrated solution
  • Very low external component count
  • 2-layer low cost 1 Sq.inch PCB
  • Fully integrated CMOS RF Tranceiver with built-in PA
  • +22dBm Transmit power
  • -95dBm sens
  • Self-calibrating
DH58RFC05 Highlights
  • 0.35µ SiGe Technology
  • 5.8GHz up-converter (together with DH24RF17B)
  • Integrated power amplifier capable of 10 mW (+10 dBm) output power
  • VCO and dual-frequency synthesizer
  • LNA providing a system noise figure of 7 dB
DH58PA05 Highlights
  • 0.35µ SiGe Technology
  • Balanced input/output
  • Typical Efficiency 40%
  • Integrated Power ramping
  • Up to +28 dBm Output Power
  • Standby Function
  • Internal Interstage Matching
  • Adjustable Output Power
  • Operating voltage: 2.7V - 5.1V
DE19RF16 Highlights
  • 0.25µ CMOS Technology
  • Integrated Rx Channel Filters
  • FM Discriminator and Data Slicer
  • Integrated UHF PLL Synthesizer, including VCO and prescaler
  • 0dBm Tx Output Power
  • Integrated Voltage Regulators
  • 1152kbs Over-the-Air Data Rate
  • DECT protocol
DE19PA16 Highlights
  • 0.35µ SiGe Technology
  • Balanced input/output
  • Typical Efficiency 45%
  • Integrated Power ramping
  • Two or three battery operation
  • Up to +27 dBm Output Power
  • Standby Function
  • Internal Interstage Matching
  • Adjustable Output Power
  • Operating voltage: 1.8V - 5.1V
Main Features
  • Supports multiple lines, multiple handsets
  • Handset to Handset communication independent of Base station (Walkie Talkie mode)
  • Low component count enables cost-effective 2 layer PCB
  • Highly integrated low-cost RF solution
  • Baseband IC main features:
    • Integrated DSP Core with versatile software package
    • Internal maskable Host control SW with optional External µC
    • TRUESPEECH® TRIPLE RATE CODER® speech compression with selectable Low, Medium and High Bit Rate, up to 25 minutes of recording per 4Mbit storage
    • Hands-free TRUE FULL DUPLEX SPEAKERPHONE®
    • Called ID Type I&II
    • DTMF, CAS, Tone and FSK Detection and Generation
    • FLEXISPEECHTM variable speed playback


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ICs for Digital Cordless

Overview   Highlights   Block Diagram   Advanced Features   Products Brochure




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ICs for Digital Cordless


Overview   Highlights   Block Diagram   Advanced Features   Products Brochure

  • Voice Recognition
  • Speech Synthesis
  • Talking Caller ID
  • Polyphonic Ringer, MIDI player
  • Color LCD with Picture Caller ID

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