WM8608 ETC-unknow, WM8608 Datasheet - Page 18

• Manufacturer Part Number: WM8608
• Description: The Wm8608 Comprises A High Performance Multi-channel Pwm Digital Power Amplifier Controller. Simply By Adding Appropriate Power Output Stages A Multi-channel Power Amplifier May Be Built. Six Identical Full Audio Bandwidth Channels, Plus A Reduced B
• Manufacturer: ETC-unknow

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