wm8988 Wolfson Microelectronics plc, wm8988 Datasheet - Page 35

• Manufacturer Part Number: wm8988
• Description: Stereo Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

Production Data
w
Figure 13 I
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 14 and Figure
15. In device slave mode, Figure 16 and Figure 17, 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 14 DSP/PCM Mode Audio Interface (mode A, LRP=0, Master)
Figure 15 DSP/PCM Mode Audio Interface (mode B, LRP=1, Master)
2
S Justified Audio Interface (assuming n-bit word length)
st
(mode B) or 2
PD, Rev 4.0, October 2008
WM8988
nd
(mode A)
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