WM8768_10 WOLFSON [Wolfson Microelectronics plc], WM8768_10 Datasheet - Page 18
WM8768_10
Manufacturer Part Number
WM8768_10
Description
24-bit, 192kHz 8-Channel DAC
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM8768_10.pdf
(38 pages)
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WM8768
w
RIGHT JUSTIFIED MODE
In right justified mode, the LSB of DIN1/2/3/4 is sampled by the WM8768 on the rising edge of BCLK
preceding a LRCLK transition. LRCLK are high during the left samples and low during the right
samples (Figure 14).
Figure 14 Right Justified Mode Timing Diagram
I2S MODE
In I
following a LRCLK transition. LRCLK are low during the left samples and high during the right
samples.
Figure 15 I
DSP MODE A
In DSP mode A, the MSB of DAC channel 1 left data is sampled by the WM8768 on the second
rising edge on BCLK following a LRCLK rising edge. DAC channel 1 right and DAC channels 2/3/4
data follow DAC channel 1 left data (Figure 16).
Figure 16 DSP Mode A Timing Diagram – DAC data input
DIN1/2/3/4
DIN1/2/3/4
BCKIN
BCKIN
LRCIN
LRCIN
BCKIN
LRCIN
2
S mode, the MSB of DIN1/2/3/4 is sampled by the WM8768 on the second rising edge of BCLK
DIN1
2
S Mode Timing Diagram
MSB
MSB
1
1 BCKIN
Input Word Length (IWL)
1 BCKIN
1
2
CHANNEL 1
2
MSB
LEFT
3
1
LEFT CHANNEL
LEFT CHANNEL
2
n-1
LSB
3
n
1
n-2 n-1
2
CHANNEL 1
RIGHT
n
LSB
n-2 n-1
n-1
1/fs
n
LSB
1/fs
n
1/fs
MSB
CHANNEL 2
1 BCKIN
1
1
LEFT
2
2
MSB
3
1
RIGHT CHANNEL
RIGHT CHANNEL
2
3
CHANNEL 4
RIGHT
n-2 n-1
n-1
PD Rev 4.3 July 2010
n
n
LSB
Production Data
n-2 n-1
NO VALID DATA
1 BCKIN
n
LSB
18
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