WM8971L Wolfson Microelectronics Ltd., WM8971L Datasheet - Page 40

• Manufacturer Part Number: WM8971L
• Description: Stereo Codec for Portable Audio Applications
• Manufacturer: Wolfson Microelectronics Ltd.

WM8971L
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In DSP/PCM mode, the left channel MSB is available on either the 1
rising edge of BCLK (selectable by LRP) following a rising edge of LRC. Right channel data
immediately follows left channel data. Depending on word length, BCLK frequency and sample rate,
there may be unused BCLK cycles between the LSB of the right channel data and the next sample.
In device master mode, the LRC output will resemble the frame pulse shown in Figure 22 and Figure
23. In device slave mode, Figure 24 and Figure 25, it is possible to use any length of frame pulse
less than 1/fs, providing the falling edge of the frame pulse occurs greater than one BCLK period
before the rising edge of the next frame pulse.
Figure 22 DSP/PCM Mode Audio Interface (mode A, LRP=0, Master)
Figure 23 DSP/PCM Mode Audio Interface (mode B, LRP=1, Master)
Figure 24 DSP/PCM Mode Audio Interface (mode A, LRP=0, Slave)
st
(mode B) or 2
PD Rev 4.1 August 2005
Production Data
nd
(mode A)
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