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WM8608 Scheda tecnica(PDF) 18 Page - Wolfson Microelectronics plc

Il numero della parte WM8608
Spiegazioni elettronici  5 TO 7.1 CHANNEL PWM CONTROLLER
PDF  54 Pages
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Produttore elettronici  WOLFSON [Wolfson Microelectronics plc]
Homepage  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8608 Scheda tecnica(HTML) 18 Page - Wolfson Microelectronics plc

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WM8608
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PP Rev 1.5 March 2004
18
I
2S MODE
In I
2S mode, the MSB is sampled on the second rising edge of BCLK following a LRCLK transition.
LRCLK is low during the left samples and high during the right samples.
LEFT CHANNEL
RIGHT CHANNEL
LRCLK
BCLK
DINFRONT
DINSRND
DINC_LFE
DINREAR
1/fs
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
LSB
MSB
1 BCLK
1 BCLK
Figure 11 I
2S Mode TIming Diagram
DSP MODE A AND B
In DSP mode, the Front Left (FL) channel MSB is available on either the 1
st (mode B) or 2nd (mode
A) rising edge of BCLK (selectable by LRP) following a rising edge of LRCLK. 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.
LRCLK
BCK
DINFRONT
Input Word Length (IWL)
1/fs
DINFRONT
LEFT
n
2
1
n-1
LSB
MSB
n
2
1
n-1
DINFRONT
RIGHT
2
1
DINSRND
LEFT
n
n-1
DINREAR
RIGHT
NO VALID DATA
1 BCLK
1 BCLK
Figure 12 DSP Mode A Timing Diagram
LRCLK
BCK
DINFRONT
Input Word Length (IWL)
1/fs
DINFRONT
LEFT
n
2
1
n-1
LSB
MSB
n
2
1
n-1
DINFRONT
RIGHT
2
1
DINSRND
LEFT
n
n-1
DINREAR
RIGHT
NO VALID DATA
1
Figure 13 DSP Mode B Timing Diagram



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