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參數(shù)資料
| 型號： | TWL1110GQE |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA80 |
| 封裝： | PLASTIC, MICRO, BGA-80 |
| 文件頁數(shù)： | 14/37頁 |
| 文件大?。?/td> | 496K |
| 代理商： | TWL1110GQE |
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TWL1110
VOICE-BAND AUDIO PROCESSOR (VBAP
)
SLWS103 – NOVEMBER 2000
21
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
transmit operation (continued)
_
+
_
+
Vref
510 k
510 k
34 k
34 k
Ci MIC1N
Ci MIC1P
M
I
C
Rmic
MBIAS
Figure 6. Typical Microphone Interface
microphone mute function
Transmit channel muting provides 80-dB attenuation of the input microphone signal. The MICMUTE function
can be selected by setting bit 6 of the power control register through the I2C interface.
transmit channel gain control
The values in the transmit PGA control registers control the gain in the transmit path. The total TX channel gain
can vary from 41.5 dB to 19.5 dB. The default total TX channel gain is 23.5 dB.
Table 2. Transmit Gain Control
BIT NAME
MIC AMP1
MIC AMP2
TX PGA
GAIN
MODE
TOTAL TX GAIN
TP3
TP2
TP1
TP0
GAIN
MIN
TYP
MAX
UNIT
0
23.5
18
0
Extended
41.3
41.5
41.7
dB
0
1
23.5
18
–2
Extended
39.3
39.5
39.7
dB
0
1
0
23.5
18
–4
Extended
37.3
37.5
37.7
dB
0
1
23.5
18
–6
Extended
35.3
35.5
35.7
dB
0
1
0
23.5
18
–8
Extended
33.3
33.5
33.7
dB
0
1
0
1
23.5
18
–10
Extended
31.3
31.5
31.7
dB
1
0
23.5
6
0
Normal
29.3
29.5
29.7
dB
1
0
1
23.5
6
–2
Normal
27.3
27.5
27.7
dB
1
0
1
0
23.5
6
–4
Normal
25.3
25.5
25.7
dB
1
0
1
23.5
6
–6
Normal
23.3
23.5
23.7
dB
1
0
23.5
6
–8
Normal
21.3
21.5
21.7
dB
1
0
1
23.5
6
–10
Normal
19.3
19.5
19.7
dB
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TWL1110GQER | 制造商:Texas Instruments 功能描述:VOICE BAND AUD PROCESSOR 80BGA MICROSTAR JUNIOR - Tape and Reel |
| TWL1110PBS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TWL1110PBSR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TWL1110TQFP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:VOICE-BAND AUDIO PROCESSOR VBAPE |
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