FX365A データシートの表示（PDF） - CML Microsystems Plc
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FX365A Datasheet PDF : 2 Pages
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CML Semiconductor Products
PRODUCT INFORMATION
FX365A CTCSS Encoder/Decoder
Features
Improved Audio and Noise
Performance
39 Programmable Sub-Audio
Tones + NOTONE
Sub-Audio Frequency Range
67.0Hz to 250.3Hz
Publication No. D/365A/F/2 Feb 1992
Advance Information
Reduced Current Requirement in
Rx Monitoring Mode
Pin and Function Compatible
with FX365 Microcircuits
High Voiceband/CTCSS Isolation
Gain (dB)
0
-10
-20
CTCSS Frequencies
Voiceband Frequencies
-30
-33
-40
-50
-60
-70
100
250.3
200
300
400
500 600 700 800 900 1000
FX365A Voiceband Filter Response
Frequency (Hz)
Brief Description
The FX365A is a half-duplex µProcessor controlled
CTCSS Encoder and Decoder with integral voice-band
filtering.
This device which is pin and function compatible
with standard FX365 microcircuits is also available in a
24pin plastic Small Outline (S.O.I.C.) [365A DW] SMD
package. The FX365A demonstrates improved voice-
band noise performance and requires less supply
current in the Rx monitoring mode.
The FX365A has the capability of encoding and
decoding 39 separate sub-audio tones, 38 of which are
detailed in the current FX365 Data Sheet, plus an
additional tone of 69.3Hz.
This Data Sheet, which details the differences
between the FX365A and the FX365 microcircuits,
should be used with the current FX365 Data Sheet.
Programmable Sub-Audio Rx and Tx Frequencies (Hz)
67.0
69.3
71.9
88.5
91.5
94.8
114.8
118.8
123.0
151.4
156.7
162.2
203.5
210.7
218.1
FX365A Tx and Rx Sub-Audio Frequencies
74.4
97.4
127.3
167.9
225.7
77.0
100.0
131.8
173.8
233.6
79.7
103.5
136.5
179.9
241.8
82.5
107.2
141.3
186.2
250.3
85.4
110.9
146.2
192.8
NOTONE
69.3Hz Tone Generation
The additional sub-audio tone provided by the
FX365A is 69.3Hz.
With reference to the FX365 Data Sheet –
Table 3, the programming information is as follows:
Nominal D0 D1 D2 D3 D4 D5
Freq. (Hz)
69.3
1
0
0
1
1
1
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