CMX208 Datasheet, PDF (1/25 Pages) CML Microcircuits – ISDN Dual Telephony Protocol Engine

CMX208
ISDN Dual Telephony
Protocol Engine
D/208/1 October 1999
Features
• Supports Incoming and Outgoing Calls
• Independent Port Configuration
• Flexible B-channel Mapping
• Supports CTR3 Approval
• Full API Available
Advance Information
Applications
• Feature Phones
• Pay-Phones
• PABX Telephones
• DECT Cordless Phones
• Reference Designs Available
1.1 Brief Description
The CMX208 is an ISDN telephony protocol engine which implements the lower level ISDN interface and
communicates with the CMX605 and other standard devices to form a fully integrated ISDN chipset for voice
communications. The CMX208 puts all the main data processing elements in a single device. No ISDN
software has to be written and simple ‘Plug and Play’ design results. This reduces development time and
provides a highly cost-effective hardware solution. By using proven circuit designs, the designer can move
quickly from initial concept through design in to manufacture.
The CMX208 supports two voice ports over the ISDN line, which can be used to provide ISDN telephony
services or POTS line interfaces, and has independent keypad-configuration of these services for each port.
The CMX208’s feature set and architecture allow most analogue systems to be converted to an ISDN
equivalent with enhanced features.
The CMX208 is designed to work with the AMD 79C30 S/T bus interface, the Motorola MC145480 PCM codec
and the CML CMX605 POTS interface circuit, and also comes complete with embedded applications software.
To support the CMX208, CML can also provide licensed reference designs on user request. A flexible
Applications Program Interface (API) allows users to customise the features and operation of their own design.
The CMX208 comes in a compact 80-pin surface mount package.
© 1999 Consumer Microcircuits Limited
© 1999 Chiron Technology Limited