FX365C

更新时间： 2024-11-21 22:48:55

品牌	Logo	应用领域
CMLMICRO		解码器
页数	文件大小	规格书
9页	117K
描述
Low-Voltage CTCSS Encoder/ Decoder

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中文翻译

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数据手册

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FX365C 数据手册

CML Semiconductor Products

PRODUCT INFORMATION

Low-Voltage CTCSS Encoder/

Decoder

FX365C

Publication D/365C/3 October 1995

Features

Low-Voltage (3-Volt) Supply

39 Programmable Sub-Audio

Applications

Mobile Radio Systems

Community Base Stations

“Sports Radio” (Japan)

Tones + N^OTONE

Meets MPT1306 and EIA - 220 B

High Voiceband/CTCSS Isolation

Sub-Audio Signalling and Selec-

tive Calling

Status and Alarm Systems

Amateur Radio

Separate Sub-Audio and Rx/Tx

Audio Paths and Filtering

Tx AUDIO

OUTPUT

VOICE-AUDIO PATH

Tx AUDIO

INPUT

300Hz

Rx AUDIO

INPUT

Rx AUDIO

OUTPUT

(Rx)

CONTROL

XTAL/CLOCK

XTAL

XTAL/CLOCK

GENERATOR

V_DD

SUB-AUDIO PATH

(Rx)

SUB-AUDIO

TONE INPUT

DIGITAL

OUTPUT

LATCH

f_TONE

PERIOD

DETECTOR

Rx TONE

DETECT

TONE FREQUENCY

BUS

LOAD/LATCH

V_BIAS

SERIAL ENABLE 1/D₅

SERIAL ENABLE 2/D₄

FX365C

SERIAL DATA/D

PROGRAM

LOGIC

TONE

GENERATOR

Tx TONE

OUTPUT

8-BIT

SERIAL

SHIFT

SERIAL CLOCK/D

8-BIT

LATCH

Tx ENABLE

Rx/Tx

PTL

CONTROL

V_SS

LOGIC

DECODE

COMPARATOR REF.

DECODE

COMPARATOR

INPUT

Rx TONE DECODE

OUTPUT

DECODE COMPARATOR

Fig.1 Functional Block Diagram

Brief Description

The Rx sub-audio (CTCSS) path contains a

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

(+N^OTONE) in the range 67.0Hz to 250.3Hz. Tone

frequencies and all functional commands can be

loaded to the device in either pin-selectable 8-bit

parallel or serial format.

(selected tone frequency) bandpass filter and period

detector providing a logic level output (Rx Tone

Detect) to indicate a successful decode operation.

Rx “Press to Listen” (PTL) and Tx “Squelch-Tail

Elimination” functions are available in both command

loading modes. The squelch-tail elimination function

will provide (Tx tone) phase-reversal to minimise the

annoying audio outputs that occur at the receiver on

completion of a transmission.

Tone frequencies and filter accuracies are

maintained by an on-chip 1.0MHz clock oscillator

employing an external crystal or clock pulse input.

The FX365C, which exhibits high audio and sub-

audio performance with low falsing, is available in 24-

pin DIL and small outline SMD packages.

A separate, Rx/Tx voice-audio path is available with

a highpass (sub-audio reject) filter automatically

placed in the relevant Rx or Tx voice line.

12 3 4 5 6 7...9

中文翻译

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与FX365C相关器件

型号	品牌	获取价格	描述	数据表
FX365CDW	CMLMICRO	获取价格	Low-Voltage CTCSS Encoder/ Decoder
FX365CJ	CMLMICRO	获取价格	Low-Voltage CTCSS Encoder/ Decoder
FX365J	CMLMICRO	获取价格	COMPATIBLE CTCSS ENCODER / DECODER
FX365LG	CMLMICRO	获取价格	COMPATIBLE CTCSS ENCODER / DECODER
FX365LS	CMLMICRO	获取价格	COMPATIBLE CTCSS ENCODER / DECODER
FX366	CMLMICRO	获取价格	AMPS / TACS QUAD FILTER ARRAY
FX-366.6667MHZBCD1003	FOX	获取价格	Parallel - 3Rd Overtone Quartz Crystal, 66.6667MHz Nom,
FX-366.6667MHZBZE0003	FOX	获取价格	Series - 3Rd Overtone Quartz Crystal, 66.6667MHz Nom,
FX-366.6667MHZBZE1003	FOX	获取价格	Parallel - 3Rd Overtone Quartz Crystal, 66.6667MHz Nom,
FX366DW	CMLMICRO	获取价格	AMPS / TACS QUAD FILTER ARRAY

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