PCM5310PAPR datasheet(37/103 Pages) TI

номер детали	PCM5310PAPR

подробное описание детали	24-Bit, 96-/192-kHz, Asynchronous, 4-Channel/4-Channel Audio Codec with 2-VRMS Driver, Headphone Driver, and 6 Audio Interface Ports

PDF	103 Pages

Scroll/Zoom	100%

производитель	TI [Texas Instruments]

домашняя страница	http://www.ti.com

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37 / 103 page

ANALOG MUX CHANGING TO REDUCE AUDIBLE NOISE

(2)

(1)

AIN1L

AIN2L

I CSetting

ADCOutput

(3)

(4)

PCM5310

www.ti.com ............................................................................................................................................................................................ SLES244 – FEBRUARY 2009

The PCM5310 has an analog multiplexer (mux) that can select six stereo analog inputs. The ADC output may

have audible noise when selecting without mute control via I2C. It is recommend to use digital soft mute before

changing the analog input, as shown in Figure 44.

(1)

Enable digital soft mute of ADC.

(2)

Change analog input source.

(3)

Disable digital soft mute of ADC.

(4)

Maximum mute time is [241 × 8 fS] seconds; however, this time depends on the wave form if zero crossing is

enabled. It is recommended to read the status of this mute from Register 35 to 39 via I2C. Then if the status is high,

disable mute.

Figure 44. Analog Mux Changing to Reduce Audible Noise

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