Production Data

WM8783

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PD, August 2010, Rev 4.0

11

The digital audio interface supports many common sample rates, as detailed in Table 1. The required

MCLK frequency in each case is also noted.

The WM8783 will automatically determine the MCLK / fs ratio according to the supplied LRCLK and

MCLK inputs. Note that the BCLK frequency is 64 x fs in all cases.

SAMPLE RATE

MCLK

MCLK RATIO

8kHz

2.048MHz

256 x fs

16kHz

4.096MHz

256 x fs

32kHz

8.192MHz

256 x fs

44.1kHz

11.2896MHz

256 x fs

48kHz

12.288MHz

256 x fs

88.2kHz

11.2896MHz

128 x fs

96kHz

12.288MHz

128 x fs

Table 1 Digital Audio Interface Clocking

The WM8783 supports 24-bit stereo operation in I2S digital audio format.

as illustrated in Figure 5. The other bits up to the LSB are then transmitted in order.

Note that there are unused BCLK cycles between the LSB of one sample and the MSB of the next.

Note that BCLK is generated internally and is not transmitted or received externally to the WM8783.