WM8783 查看數據表（PDF） - Wolfson Microelectronics plc

零件编号

产品描述 (功能)

生产厂家

WM8783

Stereo Low Power 96kHz ADC

Wolfson Microelectronics plc 

Production Data

WM8783

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

8kHz

2.048MHz

16kHz

4.096MHz

32kHz

8.192MHz

44.1kHz

11.2896MHz

48kHz

12.288MHz

88.2kHz

11.2896MHz

96kHz

12.288MHz

Table 1 Digital Audio Interface Clocking

MCLK RATIO

256 x fs

256 x fs

256 x fs

256 x fs

256 x fs

128 x fs

128 x fs

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

In I2S mode, the MSB is available on the second rising edge of BCLK following a LRCLK transition,

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.

Figure 5 I2S Digital Audio Interface format (assuming n-bit word length)

w

PD, August 2010, Rev 4.0

11

Share Link: