PA5750 Datasheet, PDF (24/30 Pages) Protek Devices – Low Power Stereo Audio CODEC With Speaker and Headphone Amplifier.

ANALOG PRODUCTS DIVISION
PA5750
Low Power Stereo Audio CODEC
With Speaker and Headphone Amplifier.
7. Digital Audio Interface.
The PA5750 provides four formats of serial DATA interface to the input of the DAC through LRCK, SCLK and
SDIN/SDOUT pins.
They are I²S, left justified, right justified and DSP/PCM mode. DAC input DSDIN is sampled by PA5750 on the
rising edge of DSCLK. ADC DATA is moved out on ASDOUT and changes on the falling edge od ASCLK. The
relation of SDATA (SDIN/SDOUT), SCLK and LRCK with the three formats is shown in Fig. 3 through Fig. 7.
SDATA
SCLK
1 SCLK
1
2
3
MSB
n-2
n-1
n
LSB
1 SCLK
1
2
3
MSB
n-2
n-1
n
LSB
LRCK
LEFT CHANNEL
RIGHT CHANNEL
Fig. 3 I2S Serial Audio DATA Format up to 24-bit
SDATA
SCLK
LRCK
1
2
3
MSB
n-2
n-1
n
LSB
1
2
3
MSB
n-2 n-1 n
LSB
LEFT CHANNEL
RIGHT CHANNEL
Fig. 4 Left Justified Serial Audio DATA Format up to 24-bit
SDATA
SCLK
LRCK
1
2
3
MSB
n-2 n-1 n
LSB
1
2
3
MSB
LEFT CHANNEL
RIGHT CHANNEL
Fig. 5 Right Justified Serial Audio DATA Format up to 24-bit
n-2 n-1 n
LSB
561 E Elliot Road.#175 Chandler, AZ 85225 Tel: [phone]. Fax: [phone].
24
95230 Rev.0. 04/09
www.protekanalog.com
Not for use in any life support systems.