STA529Q datasheet(18/57 Pages) STMICROELECTRONICS

部品番号	STA529Q

部品情報	FFX™ audio codec with analog and digital inputs and 2 x 1.2 W (or 2 x 100 mW HP) class-D amplifier

PDF	57 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

ホームページ	http://www.st.com

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18 / 57 page

Digital processing

STA529

18/57

Doc ID 13095 Rev 3

Digital processing

The STA529 processor block is a digital block providing two channels of audio processing

and channel-mapping capability.

5.1

Signal processing flow

I2S or stereo ADC data can be selected. The I2S frequency range is 8 kHz to 192 kHz. The

ADC sampling frequency can be selected between 8 kHz and 48 kHz.

5.2

I2C interface disable

When pin I2CDIS = 1, the SDA, SCL, LRCLKO and BICLKO pins can be pulled high or low

to change certain parameters of operation.

●

SDA = 0: FFX input comes from ADC

SDA = 1: FFX input comes from digital audio interface

●

SCL = 0: binary output mode (binary soft start/stop enabled)

SCL = 1: phase shift output mode

●

LRCLKO = 0: no volume change

LRCLKO = 1: channel volume up on both channel

●

BICLKO = 0: no volume change

BICLKO = 1: channel volume down on both xchannel.

At power up, the channel volume is set to -60 dB. When holding pin LRCLKO = 1 and pin

BICLKO = 1 simultaneously, the channel volume is set to 0 dB. A high pulse on pin LRCLKO

causes a channel volume change of +0.5 dB and a high pulse on pin BICLKO causes a

channel volume change of -0.5 dB.

STA529Q データシート(PDF) 18 Page - STMicroelectronics