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MX165CTN

Low Voltage CTCSS Encoder/Decoder with TX/RX Filters

MX-COM Inc  

Low Voltage CTCSS Encoder/Decoder

3

Block Diagram

TONE IN

TONE IN

FILTER

+

-

f TONE CLKS

CLKS

TONE DECODE

FILTER

REFERENCE

VOLTAGE

-

+

LOAD/LATCH

D5/SERIAL ENABLE 1

D4/SERIAL ENABLE 2

D3/SERIAL DATA IN

D2/SERIAL CLOCK

D1

D0

RX/TX

PTL

XTAL/CLK

XTAL

CLKS/XTAL

DIGITAL

INTERFACE

AND

CLOCK

GENERATION

CLKS/XTAL

A0-A5

D0-D10

TONE DETECT RX TONE DETECT

LOGIC

TONE OUT FILTER

TX TONE OUT

TONE

ROM

48 x 10

VDD

VSS

VBIAS

TX AUDIO IN

RX AUDIO IN

DECODE COMPARATOR REF.

DECODE COMPARATOR IN

CLK

300Hz

AUDIO FILTER

+

-

TX AUDIO OUT

RX AUDIO OUT

RX TONE DECODE

Figure 1 : Block Diagram

MX165C

© 1997 MX•COM Inc.

www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054

Doc. # 20480102.008

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.

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