器件名称: CMX808A
功能描述: Family Radio CTCSS Type 2 Encoder and Decoder
文件大小: 526.95KB 共23页
简 介:CML Microcircuits
COMMUNICA TION SEMICONDUCTORS
D/808A/6 September 2003
CMX808A
Family Radio CTCSS ‘Type 2’ Encoder and Decoder
1.0
Features Unique CTCSS ‘Type 2’ Operation Fast Decode on all Tones (140ms) Tones from 60Hz to 251Hz Tone Cloning Low Power Operation (1.3mA at 3.0V)
High Performance Encode/Decode Flexible Multiple Decode Options Sub-Audio Tone Rejection Filter 48 Programmable CTCSS Tones Compact 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 Controllers 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 examp……
