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參數資料
| 型號： | FX818 |
| 元件分類： | Codec |
| 英文描述： | CTCSS Super Codec |
| 中文描述： | 超級亞音頻編解碼器 |
| 文件頁數： | 13/26頁 |
| 文件大?。?/td> | 676K |
| 代理商： | FX818 |
CTCSS Signalling Processor
FX818
1997
Consumer Microcircuits Limited
13
D/818/4
AUDIO CONTROL Register (Hex address $8A)
This is a 16-bit register. Byte (1) is sent first. The six least significant bits of the first byte in this register are
used to set the attenuation of the Modulator 1 amplifier and the six least significant bits of the second byte in
this register are used to set the attenuation of the Modulator 2 amplifier, according to the tables below:
BYTE 1
BYTE 2
5
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
X
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
2
X
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
X
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
X
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Mod. 1 Attenuation
Disabled (V
BIAS
)
>40dB
12.0dB
11.6dB
11.2dB
10.8dB
10.4dB
10.0dB
9.6dB
9.2dB
8.8dB
8.4dB
8.0dB
7.6dB
7.2dB
6.8dB
6.4dB
6.0dB
5.6dB
5.2dB
4.8dB
4.4dB
4.0dB
3.6dB
3.2dB
2.8dB
2.4dB
2.0dB
1.6dB
1.2dB
0.8dB
0.4dB
0dB
5
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
X
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
2
X
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
X
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
X
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Mod. 2 Attenuation
Disabled (V
BIAS
)
>40dB
6.0dB
5.8dB
5.6dB
5.4dB
5.2dB
5.0dB
4.8dB
4.6dB
4.4dB
4.2dB
4.0dB
3.8dB
3.6dB
3.4dB
3.2dB
3.0dB
2.8dB
2.6dB
2.4dB
2.2dB
2.0dB
1.8dB
1.6dB
1.4dB
1.2dB
1.0dB
0.8dB
0.6dB
0.4dB
0.2dB
0dB
X = don't care
MOD1 ENABLE
(Bit 5, first byte)
When this bit is "1" the MOD1 attenuator is enabled.
When this bit is "0" the MOD1 attenuator is disabled (i.e. powersaved).
MOD2 ENABLE
(Bit 5, second byte)
When this bit is "1" the MOD2 attenuator and the SUMMER AMP are enabled.
When this bit is "0" they are both disabled (i.e. powersaved).
(Bits 7 and 6, first
and second bytes)
Reserved for future use. These should be set to "0"
相關PDF資料 |
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| FX836DW | Telecommunication IC |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FX818D2 | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:CTCSS SIGNALLING PROCESSOR |
| FX826 | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:AMPS/TACS System Audio Processor |
| FX826DW | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:AMPS / TACS SYSTEM AUDIO PROCESSOR |
| FX826J | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:AMPS/TACS System Audio Processor |
| FX828 | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:CTCSS/DCS/SELCALL Processor |
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