CMX808A Datasheet | CML

Features - Unique CTCSS ‘Type 2’ Operation - Fast Decode on all Tones (140ms) - Tones from 60Hz to 251Hz - Tone Cloning - Low Power Operation (1.3m A at 3.0V) - High Performance Encode/Decode - Flexible Multiple Decode Options - Sub-Audio Tone Rejection Filter - 48 Programmable CTCSS Tones - pact 20-pin TSSOP Package Applications - Family Radio Service (FRS) Handportables - Amateur Radio Equipment - General Mobile Radio Service (GMRS) - Short Range Business Radio 1.1 Brief Description This device is a unique product for the designer of family radio transceivers. Offering leading edge performance while also being highly cost effective. The device is simple to interface to a host of µControllers via the serial programming interface. A full range of 48 tones can be generated and detected by the device. The decode time has been vastly improved from that offered by other solutions. Fast response and de-response gives the user of a family radio transceiver faster switching times and a reduction in the annoying squelch tail often found in CTCSS based systems. The device has very low power consumption operating at a minimum of 3.0V. A unique feature of the device is its ability to look for 7 different CTCSS codes simultaneously. This allows FRS designers to offer equipment which can look for personal, family or open channel codes at the same time. For example a soccer team coach can call each of the 11 players individually or the team as a group. Codes can be used as Paging codes, open chat mode codes as well as personal and family codes. These features allow FRS designers to differentiate their products from that of the petition in unique ways to gain market share in this highly petitive application. The CMX808A opens the way to rapid development of new family radio applications.  2003 CML Microsystems Plc Family Radio CTCSS 'Type 2' Encoder and Decoder Section CONTENTS Page 1.0 Features...