Cirrus-logic CS43L21 Manuel d'utilisateur télécharger pdf (Page 54)

54 DS723F1

CS43L21

Signal Processing Engine Overflow (SPEX_OVFL)

Default: 0

Function:

Indicates a digital overflow condition within the data path after the signal processing engine.

PCMX Overflow (PCMX_OVFL)

Default: 0

Function:

Indicates a digital overflow condition within the data path of the PCM mix.

6.18 Charge Pump Frequency (Address 21h)

Charge Pump Frequency (CHRG_FREQ[3:0])

Default: 0101

Function:

Alters the clocking frequency of the charge pump in 1/(N+2) fractions of the DAC oversampling rate, 128 Fs,

should the switching frequency interfere with other system frequencies such as those in the AM radio band.

Note: Distortion performance may be affected.

76543210

CHRG_-

FREQ3

CHRG_-

FREQ2

CHRG_-

FREQ1

CHRG_-

FREQ0

Reserved Reserved Reserved Reserved

N CHRG_FREQ[3:0] Frequency

0 0000

... ...

15 1111

64xFs

N2+

-----------------

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 63 64

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Cirrus-logic CS43L21 Manuel d'utilisateur Page 54