WM8746 Wolfson Microelectronics plc, WM8746 Datasheet - Page 12

• Manufacturer Part Number: WM8746
• Description: 24-bit, 192khz 6-channel Dac With Volume Control
• Manufacturer: Wolfson Microelectronics plc

WM8746
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RIGHT JUSTIFIED MODE
In right justified mode, the LSB is sampled on the rising edge of BCKIN preceding a
transition. LRCIN is high during the left samples and low during the right samples.
Figure 5 Right Justified Mode Timing Diagram
I
In I
LRCIN is low during the left samples and high during the right samples.
Figure 6 I
DSP MODE A
In DSP mode A, the first bit is sampled on the BCKIN edge following the one which detects a low to
high transition on LRCIN.
Figure 7 DSP Mode A Timing Diagram
2
S MODE
DIN0/1/2
DIN0/1/2
2
BCKIN
BCKIN
BCKIN
LRCIN
LRCIN
LRCIN
S mode, the MSB is sampled on the second rising edge of BCKIN following a LRCIN transition.
DIN0
2
S Mode Timing Diagram
MSB
1
1 BCKIN
Input Word Length (IWL)
MSB
1 BCKIN
1
2
CHANNEL 0
2
LEFT
MSB
1
3
LEFT CHANNEL
LEFT CHANNEL
n-1
2
LSB
3
n
1
n-2 n-1
2
CHANNEL 0
RIGHT
n-2 n-1
n
LSB
n-1
n
LSB
n
1/fs
1/fs
1/fs
CHANNEL 1
1
MSB
LEFT
1 BCKIN
1
2
2
MSB
1
3
RIGHT CHANNEL
RIGHT CHANNEL
2
CHANNEL 2
3
RIGHT
PD, October 2008, Rev 4.2
n-1
n-2 n-1
n
NO VALID DATA
n-2 n-1
n
LSB
Production Data
1 BCKIN
n
LSB
LRCIN
12