wm8805 Wolfson Microelectronics plc, wm8805 Datasheet - Page 48

• Manufacturer Part Number: wm8805
• Description: 8 1 Digital Interface Transceiver With Pll
• Manufacturer: Wolfson Microelectronics plc

WM8805
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DSP MODE A
In DSP Mode A, the MSB of the left channel data is sampled by the WM8805 on the second rising
edge of BCLK following an LRCLK rising edge. The right channel data follows the left channel data
(Figure 21).
The MSB of the left channel of the output data changes on the first falling edge of BCLK following a
low to high LRCLK transition and may be sampled on the rising edge of BCLK. The right channel
data is contiguous with the left channel data (Figure 21).
Figure 21 DSP Mode A
DSP MODE B
In DSP Mode B, the MSB of the left channel data is sampled by the WM8805 on the first BCLK rising
edge following a LRCLK rising edge. The right channel data follows the left channel data (Figure 22).
The MSB of the output data changes on the same falling edge of BCLK as the low to high LRCLK
transition and may be sampled on the rising edge of BCLK. The right channel data is contiguous with
the left channel data (Figure 22).
Figure 22 DSP Mode B
DIN / DOUT
LRCLK
LRCLK
BCLK
BCLK
DIN / DOUT
MSB
1
Input Word Length (IWL)
MSB
1 BCLK
1
2
Input Word Length (IWL)
2
LEFT
LEFT
n-1
LSB
n-1
n
LSB
n
1
1
2
RIGHT
2
RIGHT
n-1
n-1
n
n
1/fs
1/fs
NO VALID DATA
NO VALID DATA
PD, Rev 4.5, March 2009
Production Data
1 BCLK
1
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