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PCM1802

SLES023D – DECEMBER 2001 – REVISED DECEMBER 2016

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Table 5. Oversampling Control

OSR

OVERSAMPLING RATIO

LOW

×64

HIGH

×128 (fS < 50 kHz)

7.4.2 Serial Audio Data Interface

The PCM1802 interfaces with the audio system through BCK, LRCK, FSYNC, and DOUT.

7.4.2.1 Data Format

The PCM1802 supports four audio data formats in both master and slave modes, and they are selected by FMT1

and FMT0 as shown in Table 6. Figure 23 and Figure 25 illustrate the data formats in slave mode and master

mode, respectively.

Table 6. Data Format

FORMAT

FMT1

FMT0

FORMAT

0

0

0

Left-justified, 24-bit

1

0

1

I2S, 24-bit

2

1

0

Right-justified, 24-bit

3

1

1

Right-justified, 20-bit