Home Networking/Routers
Cordless Technology
CX06815-25 Features
Complete system solution
Caller ID functionality (optional)
Higher level of integration
Improved voice quality
Worldwide applications
More design flexibility
2.4GHz or 900MHz radios available
The Ultimate Cordless Telephone Solution
Conexant offers complete and flexible antenna-to-microphone system solutions
for both 900MHz and 2.4GHz cordless telephones. Our expertise in Digital
Spread Spectrum (DSS) technology forms the core of many of today's top-rated
telephone systems.
Conexant's proven DSS solutions continue to represent the latest in cordless
telephone evolution. Advanced power control, smart channel hopping, and
security scrambling algorithms -- standard in our DSS offerings -- enable
the secure, clear conversations that consumers have come to expect from
Conexant-based telephones. And now that Conexant provides on-chip support
for Caller ID, 2-line, speakerphone and/or answering machine functionality,
every phone manufacturer has the opportunity to produce a full-line of digital
spread spectrum cordless phones.
Versatile New Options
Conexant's latest DSS device set supports CID applications via frequency
shift keying (FSK) detection and CAS tone detection hardware and software.
It also enables central office messaging via stutter dial tone (SDT) detection
and visual message waiting indication (VMWI). Integrated Telephone
Answering Devices (ITAD) are supported via real-time clock and seven-
segment drivers. Two-line applications can be supported via a second codec
and three independent dual-tone multifrequency (DTMF) generators. The new
API firmware architecture provides increased flexibility and simplifies code-
development programming.
Conexant's DSS family enables phone designers to lower system costs
and find the best match for their architectural needs by offering five unique
mixed- signal baseband device options:
Standard basic device
Custom mask programmed device
Custom mask programmed device with CID
External memory (XROM) device
External memory (XROM) device with CID
Part Number CX06815-25
Description Cordless Spread Spectrum Solution
Cordless Spread Spectrum Solutions
For 900 MHz and 2.4 GHz Telephones
Home Networking/Routers
Cordless Technology
Baseband Devices
Basic
The Basic baseband device is a 100-pin MonopacTM device that
offers the most cost-effective telephone design. It contains all the
necessary firmware to provide standard functionality, including
dual keypad and speakerphone features. It also offers Conexant's
patented "OEM Parameters" option that enables OEMs to
customize the product by setting bit fields in an external serial
EEPROM device.
Custom
The Custom baseband device is a 100-pin Monopac device that
offers 48 KB of ROM and 2 KB of RAM to let OEMs write custom
firmware for higher-end models. To help lower costs, the device is
available with or without integrated CID support.
External Memory (XROM)
The XROM baseband device is a 128-pin stand-alone device
which can access up to 59 KB of external ROM. It aids firmware
development by providing access to ROM emulator control
signals. OEMs can use this device to achieve a fast time to
market for feature-rich phones. OEMs also can store the firmware
in an external memory device. Like the custom baseband device,
the XROM is available with or without integrated CID support.
Flash Emulation Development Device
The Flash emulation development device is a pin-compatible
development tool with the same package dimensions as the
Basic or Custom baseband device. It allows programmers to
evaluate and debug their code on their own production platform
prior to masking a ROM device, reducing the time to market and
improving the quality of the finished product.
RF Devices
Spread Spectrum Transceivers
The RF105 (for 900 MHz operation) and RF109 (for 2.4 GHz
operation) are fully integrated transceiver ICs that provide
complete transmit, receive and frequency synthesis functions.
They use a direct-conversion architecture and time division
duplexing (TDD) of the transmit and receive signals to minimize
circuit complexity.
Spread Spectrum Power Amplifiers
The RF106 (for 900 MHz operation) and RF110 (for 2.4 GHz
operation) are class-AB power amplifiers (PA), designed for ISM
band applications. They deliver output power proportional to the
input signal from the RF105 or RF109 transceiver IC, up to a
maximum of 100 mW.
Application Programming Interface (API)
Conexant's DSS offerings provide a convenient software
development environment through an Application Programming
Interface (API). The API enables developers to focus on application
layer software by taking care of lower-level functions such as link
establishment and management as well as audio processing.
The API accelerates software development activities to support
fast time-to-market designs.
2.4 GHz or 900 MHz
radio can be used
2.4 GHz or 900 MHz
radio can be used
API Block Diagram
XROM Architecture
Link
Protocol
Link API
8K Data
Channel
Audio API
Mic
LCD
HELLO!
LEDs
Key Pad
TAD
Line 1 Line 2
Audio
RF
Interface Control
Hardware
Interfaces
Internal
Codes
API Layer
Application
Layer
Read CID
Information
Proven
Telephone Code
Easy to modify Code Sections
to add new features
Speaker
Basic and Custom Architecture
2002, Conexant Systems, Inc. All Rights Reserved. Conexant and the Conexant
logo are registered trademarks of Conexant Systems, Inc. All other trademarks
are owned by their respective owners. Although Conexant strives for accuracy
in all its publications, this material may contain errors or omissions and is
subject to change without notice.
THIS MATERIAL IS PROVIDED AS IS AND WITHOUT
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NON-INFRINGEMENT.
Conexant shall not be liable for any
special, indirect, incidental or consequential damages as a result of its use.
Home Networking/Routers
Cordless Technology
02-0732
Features
Baseband Device Set
General
Direct sequence Digital Spread Spectrum telephone system
Integrated CID, TAD, and message services support
Single system solution for base station and handset
Telephone firmware provided
3V, low-power operation
>14-day standby
>4-hour talk time
OEM Parameters for easy customization
System Controller
MC19 CPU (65C02-based)
Single 19.2 MHz system clock with low-power,
on-chip oscillator
On-chip 48K ROM, 2K RAM
Watchdog/sleep/wake-up timer
External parallel bus (128-pin XROM only)
Emulation port through parallel bus (128-pin XROM only)
Controller Peripheral Functions
900 MHz or 2.4 GHz RF transceiver control
Multiplexed 6x8 keypad/GPIO switches/LCD data interface
Battery-level detector with thresholds
Serial port for I2CTM or 4-wire MicrowireTM serial EEPROM
4- or 8-bit parallel LCD data interface port
6 masked LED control ports with programmable on/off durations
Lighted keypad control
Selectable flash duration
Selectable DTMF intervals
Real-time clock
Seven-segment display driver
Support for two audio codecs
DSS Baseband Modem
I/Q A/D modem input
DBPSK DSS modulator/demodulator
12-chips/bit, 11 dB processing gain
Additional security with >224 ID and control channel scrambling codes
Automatic frequency control (AFC)
Automatic gain control (AGC)
40 independent RF channels for 2.4 GHz/20 for 900 MHz
(902928 or 24002483.5 MHz band)
Audio Co-Processor
19.2 MHz 16-bit processor
ADPCM Vocoder (ITU G.726 compliant)
Audio path and gain controls
Stutter dial tone detection
FSK detection
CAS detection
Audio Codec
Full-ITU G.714 compliant standard voice frequency linear
encoder/decoder
Delta-Sigma ADC/DAC with dynamic range >70 dB
8 KHz sampling rate
Line input and output (600-ohm load) for PSTN interfaces
DSS Firmware
Simple API code structure for link control and audio path/gain setting
Embedded RF transceiver control software
Audio and PSTN interfaces
User-customizable phone control software
Test mode
Programmable audio gain table
Driver for LCD with CID message display
Two-line support
Packages
Single-device ASIC/codec: 100-pin PQFP
XROM ASIC: 128-pin TQFP
Audio Codec: 32-pin TQFP
Direct-Conversion Transceiver
General
900 MHz or 2.4 GHz solutions available
Direct-conversion differential BPSK (DBPSK) transmit modulator
High-, medium- and low-power transmitter output levels
Direct-conversion receiver with I/Q baseband outputs
Receiver AGC
Large dynamic range: 90 dB
Single-supply voltage: 3.0V to 5.0V
RF105/RF109 Transceivers
Single-chip RF transceiver
Low power dissipation
Fast settling from standby mode
64 programmable channels with 600 KHz or 1.8 KHz
channel spacing
3-battery-cell operation
RF106/RF110 Power Amplifiers
RF power amplifier with 100 mW peak envelope output power
High efficiency from class-AB action
Packages
RF105/RF109: 48-pin ETQFP package
RF106/RF110: 20-pin TSSOP package
www.conexant.com
General Information:
U.S. and Canada: (800) 854-8099
International: (949) 483-6996
Headquarters Newport Beach
4311 Jamboree Rd, P.O. Box C
Newport Beach, CA 92660-3095
Order# 100644C
PDF 
ZIP