Advanced Information
WM8753L
Figure 15a Master Mode
Figure 15b Slave Mode
Figure 15c Mixed Mode
AUDIO DATA FORMATS – AUDIO INTERFACE AND VOICE INTERFACE
In Left Justified mode, the MSB is available on the first rising edge of BCLK following an LRC
transition. The other bits up to the LSB are then transmitted in order. Depending on word length,
BCLK frequency and sample rate, there may be unused BCLK cycles before each LRC transition.
1/fs
LEFT CHANNEL
RIGHT CHANNEL
LRC /
VXFS
BCLK /
VXCLK
DACDAT /
ADCDAT /
VXDIN /
1
2
3
n
n-2 n-1
1
2
3
n
n-2 n-1
VXDOUT
MSB
LSB
MSB
LSB
Figure 16 Left Justified Audio Interface (assuming n-bit word length)
In Right Justified mode, the LSB is available on the last rising edge of BCLK before a LRC transition.
All other bits are transmitted before (MSB first). Depending on word length, BCLK frequency and
sample rate, there may be unused BCLK cycles after each LRC transition.
AI Rev 3.1 June 2004
54
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
