WM8711BL
Production Data
There are four digital audio interface formats accommodated by the WM8711BL. These are shown in
the figures below. Refer to the Electrical Characteristic section for timing information.
Left Justified mode is where the MSB is available on the first rising edge of BCLK following a
DACLRC transition.
1/fs
LEFT CHANNEL
RIGHT CHANNEL
DACLRC
BCLK
DACDAT
1
2
3
n
n-2 n-1
1
2
3
n
n-2 n-1
MSB
LSB
MSB
LSB
Figure 13 Left Justified Mode
I2S mode is where the MSB is available on the 2nd rising edge of BCLK following a DACLRC
transition.
1/fs
LEFT CHANNEL
RIGHT CHANNEL
DACLRC
BCLK
1 BCLK
1 BCLK
DACDAT
1
2
3
n
1
2
3
n
n-2 n-1
n-2 n-1
LSB
LSB
MSB
MSB
Figure 14 I2S Mode
PD, Rev 4.2, December 2011
2244
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
