FX465

CML Semiconductor Products PRODUCT INFORMATION FX465 Extended Code CTCSS Encoder/Decoder Features Low-Voltage (3-Volt) Supply 47 Programmable Sub-Audio Tones + NOTONE Meets MPT1306 and TIA/EIA 603 High Voiceband/CTCSS Isolation Separate Sub-Audio and Rx/Tx Audio Paths and Filtering Publication D/465/2 May 1996 Applications Advance Information Mobile Radio Systems Community Base Stations “Sports Radio” (Japan) Sub-Audio Signalling and Selective Calling Status and Alarm Systems Amateur Radio TONE IN TONE IN FILTER f TONE LOAD/LATCH D5/SERIAL ENABLE D4/SERIAL ENABLE D3/SERIAL DATA IN D2/SERIAL CLOCK D1 D0 RX/TX PTL XTAL/CLOCK XTAL CLKS + - DIGITAL INTERFACE AND CLOCK GENERATION TONE DECODE FILTER CLKS REFERENCE VOLTAGE - + CLKS/XTAL CLKS/XTAL TONE DETECT LOGIC TONE OUT FILTER Rx TONE DETECT Tx TONE OUT A0 - A5 D0 - D10 TONE ROM 48 x 10 VDD VSS VBIAS FX465 TX AUDIO IN CLK Tx AUDIO OUT RX AUDIO IN DECODE COMPARATOR REF DECODE COMPARATOR IN Fig.1 Functional B...