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TLC320AD535C-I_16 Datasheet, PDF (39/42 Pages) Texas Instruments – DUAL CHANNEL VOICE/DATA CODEC
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D7 D6 D5 D4
1 ———
0 ———
— 1 ——
— 0 ——
—— 1
1
—— 1
0
—— 1
0
—— 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
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
—— 0
0
Default value: 00000000
Table A–5. Control Register 4, Voice Channel Control
D3 D2 D1 D0
DESCRIPTION
— — — — TAPI_IN preamp gain = 20 dB
— — — — TAPI preamp gain = 0 dB
— — — — Microphone preamp gain = 20 dB
— — — — Microphone preamp gain = 0 dB
0
0
0
0 Voice ADC input PGA gain = mute
0
0
0
1 Voice ADC input PGA gain = 12 dB
0
0
0
0 Voice ADC input PGA gain = 10.5 dB
1
1
1
1 Voice ADC input PGA gain = 9 dB
1
1
1
0 Voice ADC input PGA gain = 7.5 dB
1
1
0
1 Voice ADC input PGA gain = 6 dB
1
1
0
0 Voice ADC input PGA gain = 4.5 dB
1
0
1
1 Voice ADC input PGA gain = 3 dB
1
0
1
0 Voice ADC input PGA gain = 1.5 dB
1
0
0
1 Voice ADC input PGA gain = 0 dB
1
0
0
0 Voice ADC input PGA gain = –1.5 dB
0
1
1
1 Voice ADC input PGA gain = –3 dB
0
1
1
0 Voice ADC input PGA gain = –4.5 dB
0
1
0
1 Voice ADC input PGA gain = –6 dB
0
1
0
0 Voice ADC input PGA gain = –7.5 dB
0
0
1
1 Voice ADC input PGA gain = –9 dB
0
0
1
0 Voice ADC input PGA gain = –10.5 dB
0
0
0
1 Voice ADC input PGA gain = –12 dB
0
0
0
0 Voice ADC input PGA gain = –13.5 dB
1
1
1
1 Voice ADC input PGA gain = –15 dB
1
1
1
0 Voice ADC input PGA gain = –16.5 dB
1
1
0
1 Voice ADC input PGA gain = –18 dB
1
1
0
0 Voice ADC input PGA gain = –19.5 dB
1
0
1
1 Voice ADC input PGA gain = –21 dB
1
0
1
0 Voice ADC input PGA gain = –22.5 dB
1
0
0
1 Voice ADC input PGA gain = –24 dB
1
0
0
0 Voice ADC input PGA gain = –25.5 dB
0
1
1
1 Voice ADC input PGA gain = –27 dB
0
1
1
0 Voice ADC input PGA gain = –28.5 dB
0
1
0
1 Voice ADC input PGA gain = –30 dB
0
1
0
0 Voice ADC input PGA gain = –31.5 dB
0
0
1
1 Voice ADC input PGA gain = –33 dB
0
0
1
0 Voice ADC input PGA gain = –34.5 dB
0
0
0
1 Voice ADC input PGA gain = –36 dB
0
0
0
0 Voice ADC input PGA gain = 0 dB
A–3
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