參數(shù)資料
型號(hào): WM8768
廠商: Wolfson Microelectronics
英文描述: 24-bit, 192kHz 8-Channel DAC
中文描述: 24位,192kHz的8通道DAC
文件頁(yè)數(shù): 18/38頁(yè)
文件大?。?/td> 393K
代理商: WM8768
WM8768
Production Data
w
PD Rev 4.1 March 2005
18
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
2
S mode, the MSB of DIN1/2/3/4 is sampled by the WM8768 on the second rising edge of BCLK
following a LRCLK transition. LRCLK are low during the left samples and high during the right
samples.
Figure 15 I
2
S Mode Timing Diagram
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
LEFT CHANNEL
RIGHT CHANNEL
LRCIN
BCKIN
DIN1/2/3/4
1/fs
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
LSB
MSB
LEFT CHANNEL
RIGHT CHANNEL
LRCIN
BCKIN
DIN1/2/3/4
1/fs
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
LSB
MSB
1 BCKIN
1 BCKIN
1 BCKIN
LRCIN
BCKIN
DIN1
Input Word Length (IWL)
1/fs
CHANNEL 1
LEFT
n
2
1
n-1
LSB
MSB
n
2
1
n-1
CHANNEL 1
RIGHT
2
1
CHANNEL 2
LEFT
n
n-1
CHANNEL 4
RIGHT
NO VALID DATA
1 BCKIN
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