CS42L56 datasheet(76/92 Pages) CIRRUS

76 / 92 page

DS851F2

CS42L56

6.26 Gain & Bias Control (Address 1Dh)

6.26.1 PGA x Preamplifier Gain

Configures the gain of the PGA x preamp.

6.26.2 Boostx

Configures a +20 dB digital boost on ADC channel x.

6.26.3 Microphone Bias Output Level

Configures the voltage level of the microphone bias output.

6.27 PGA x MUX, Volume: PGA A (Address 1Eh) & PGA B (Address 1Fh)

6.27.1 PGA x Input Select

Selects the specified analog input signal into PGA channel x.

Note:

For pseudo-differential inputs, the CODEC automatically chooses the respective pseudo-ground

(AIN1REF or AIN2REF) for each input selection.

Use the AINx_REF bits (Analog Input 1 x Reference Configuration and “Analog Input 1 x Reference Con-

figuration” on page 74) to properly configure the input channel.

543

PREAMPB1

PREAMPB0

PREAMPA1

PREAMPA0

BOOSTB

BOOSTA

BIAS_LVL1

BIAS_LVL0

PREAMPx[1:0]

PGA x Preamp Gain

0dB

+10 dB

+20 dB

Reserved

BOOSTx

+20 dB Boost

No boost applied

+20 dB digital boost applied

BIAS_LVL[1:0]

MIC Bias Output Level

0.9xVA

0.8xVA

0.7xVA

0.6xVA

PGAxMUX1

PGAxMUX0

PGAxVOL5

PGAxVOL4

PGAxVOL3

PGAxVOL2

PGAxVOL1

PGAxVOL0

PGAxMUX[1:0]

Selected Input to PGAx

AIN1x.

AIN2x.

AIN3x.

Reserved

CS42L56 Datasheet(PDF) 76 Page - Cirrus Logic

CS42L56 Datasheet(HTML) 76 Page - Cirrus Logic

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92

Datasheet Download

Link URL