ANALOG PRODUCTS DIVISION

561 E. Elliot Road #175 Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (480) 632-1715

www.protekanalog.com

PA5331

Low Power 24-Bit, Stereo Audio CODEC

With Headphone Amplifier

95250 Rev.0. 01/10

NOT FOR USE IN LIFE SUPPORT SYSTEMS

hpOut3_ref1

3

Reserved

hpOut3_ref2

2

Reserved

hpMono_ref1

1

Reserved

hpMono_ref2

0

Reserved

Register 52

– DAC Control 30, Default 0000 0000

Bit Name

Bit

Description

spkLout2_ref1

7

Reserved

spkLout2_ref2

6

Reserved

spkRout2_ref1

5

Reserved

spkRout2_ref2

4

Reserved

mixer_ref1

3

Reserved

mixer_ref2

2

Reserved

MREF1

1

Reserved

MREF2

0

Reserved

DIGITAL AUDIO INTERFACE

The PA5331 provides four formats of serial audio data interface to the input of the DAC or output from the ADC through LRCK, SCLK

and SDIN/SDOUT pins. The four formats are I

PA5331 on the rising edge of DSCLK. ADC data is out on ASDOUT and changes on the falling edge of ASCLK. The relationship of

SDATA (SDIN/SDOUT), SCLK and LRCK with the three formats is shown through Figure 3 to Figure 7.

n- 2 n- 1 n

3

2

1

1 SCLK

MSB

LSB

LEFT CHANNEL

n- 2 n- 1 n

3

2

1

1 SCLK

MSB

LSB

RIGHT CHANNEL

SDATA

SCLK

LRCK

Figure 3 I

n- 2 n- 1 n

3

2

1

MSB

LSB

LEFT CHANNEL

n- 2 n- 1 n

3

2

1

MSB

LSB

RIGHT CHANNEL

SDATA

SCLK

LRCK

Figure 4 Left Justified Serial Audio Data Format Up To 24-bit

n- 2 n- 1 n

3

2

1

MSB

LSB

LEFT CHANNEL

n- 2 n- 1 n

3

2

1

MSB

LSB

RIGHT CHANNEL

SDATA

SCLK

LRCK

Figure 5 Right Justified Serial Audio Data Format Up To 24-bit