Cirrus-logic CS43L22 Manual do Utilizador descarregar pdf (Página 58)

58 DS792F2

CS43L22

Confidential Draft

3/4/10

7.29.2 SPKR/HP Pin Status (Read Only)

Indicates the status of the SPKR/HP pin.

7.30 Charge Pump Frequency (Address 34h)

7.30.1 Charge Pump Frequency

Sets the charge pump frequency on FLYN and FLYP.

Note: The headphone output THD+N performance may be affected.

SPKR/HP Pin State

0 Pulled Low

1 Pulled High

76543210

CHGFREQ3 CHGFREQ2 CHGFREQ1 CHGFREQ0 Reserved Reserved Reserved Reserved

CHGFREQ[3:0] N

0000 0

...

0101 5

...

1111 15

Formula: Frequency = (64xFs)/(N+2)

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 64 65 66

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Cirrus-logic CS43L22 Manual do Utilizador Página 58