CML FX365C
The FX365C is a 3-volt, half-duplex predictive Continuous Tone Controlled Squelch System (CTCSS) encoder/decoder microcircuit. The FX365C has integral voice-band filtering for prefiltering of Tx audio and the rejection of the CTCSS tone in receive. Under µProcessor control, the FX365C will encode and decode any one of 39 sub-audio frequencies (+NOTONE) in the range 67.0Hz to 250.3Hz.| Part No. | FX365C |
|---|---|
| Datasheet | FX365C Download |
| Manufacturer |  CML |
| Description | Low-Voltage CTCSS Encoder/Decoder |
| Buy | Stock & Price |
FEATURES
Low-Voltage (3-Volt) Supply 39 Programmable Sub-Audio Tones + NOTONE Meets MPT1306 and EIA - 220 B High Voiceband/CTCSS Isolation Separate Sub-Audio and Rx/Tx Audio Paths and FilteringAPPLICATIONS
Mobile Radio Systems Community Base Stations “Sports Radio” (Japan) Sub-Audio Signalling and Selective Calling Status and Alarm Systems Amateur Radio Tx Tx AUDIO INPUT VOICE-AUDIO PATH Tx 300Hz Tx AUDIO OUTPUT Rx AUDIO INPUT XTAL/CLOCK XTAL (Rx) SUB-AUDIO TONE INPUT LOAD/LATCH SERIAL ENABLE 1/D5 SERIAL ENABLE 2/D4 SERIAL DATA/D3 SERIAL CLOCK/D2 D1 D0 Rx/Tx PTL Rx XTAL/CLOCK GENERATOR SUB-AUDIO PATH fTONE 8-BIT SERIAL SHIFT REGISTER 8-BIT LATCH LOGIC VDD 2VDD 3 3 (Rx) CONTROL Rx AUDIO OUTPUT VDD DIGITAL PERIOD DETECTOR OUTPUT LATCH TONE FREQUENCY BUS PROGRAM LOGIC TONE GENERATOR Tx ENABLE CONTROL LOGIC Rx TONE DETECT VBIAS Tx TONE OUTPUT VSS DECODE COMPARATOR REF. DECODE COMPARATOR INPUT Fig.1 Functional Block Diagram + DECODE COMPARATOR Rx TONE DECODE OUTPUT FX365C BriefDESCRIPTION
Tone frequencies and all functional commands can be loaded to the device in either pin-selectable 8-bit parallel or serial format.
