13/33

STA306

Serial Audio Input Interface Format

The STA306 features a configurable digital serial audio interface. The settings of the SAIx bits determine how

the input to this interface is interpreted. Six formats are accepted.

Table 3. Interface format as a function of SAI bits.

Figure 2. Serial Audio Signals

BIT

R/W

RST

NAME

DESCRIPTION

2

R/W

0

SAI0

Serial Audio Input Interface Format : Determines the

interface format of the input serial digital audio interface.

3

R/W

0

SAI1

4

R/W

0

SAI2

SAI(2..0)

Interface Format

000

001

Left-Justified Data

010

Right-Justified 16-bit Data

011

Right-Justified 18-bit Data

100

Right-Justified 20-bit Data

101

Right-Justified 24-bit Data

SAI=000 I

SAI=001 Left Justified

LRCLK

Left

Right

SCLK

SDATA

LSB

MSB

LSB

MSB

MSB

LRCLK

Left

Right

SCLK

SDATA

LSB

MSB

LSB

MSB

MSB

SAI=010 to 101 Right Justified

LRCLK

Left

Right

SCLK

SDATA

LSB

MSB

LSB

MSB

MSB