CS42L52 datasheet(56/82 Pages) CIRRUS

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DS680A1

CS42L52

6.16.3 PGAx Volume

Sets the volume/gain of the Programmable Gain Amplifier (PGA).

Note:

The PGAxVOL bits are ignored when the PASSTHRUx bit (“Passthru Analog” on page 52) is en-

abled.

6.17 Passthru x Volume: PASSAVOL (Address 14h) & PASSBVOL (Address 15h)

6.17.1 Passthru x Volume

Sets the volume/gain of the signal routed from the PGA to the headphone/line output.

Notes:

1. This register is ignored when the PASSTHRUx bit (“Passthru Analog” on page 52) is disabled.

2. The step size may deviate from 0.5 dB at settings below -40 dB. Code settings 0x95, 0xA1, 0xAD and

0xB9 are not guaranteed to be monotonic.

PGAxVOL[5:0]

Volume

01 1111

12 dB

...

01 1000

12 dB

...

00 0001

+0.5 dB

00 0000

0 dB

11 1111

-0.5 dB

...

10 1000

-6.0 dB

...

10 0000

-6.0 dB

Step Size:

0.5 dB

543

PASSxVOL7

PASSxVOL6

PASSxVOL5

PASSxVOL4

PASSxVOL3

PASSxVOL2

PASSxVOL1

PASSxVOL0

PASSxVOL[7:0]

Gain

0111 1111

12 dB

...

0001 1000

12 dB

...

0000 0001

+0.5 dB

0000 0000

0 dB

11111 1111

-0.5 dB

...

1000 1000

-60.0 dB

...

1000 0000

-60.0 dB

Step Size:

0.5 dB (approximate)

Application:

“Analog In to Analog Out Passthru” on page 32

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