AK4103A_09 Datasheet, PDF (13/27 Pages) Asahi Kasei Microsystems – 192kHz 24-Bit DIT

[AK4103A]
■ C, U, V Serial Ports
Normal mode
In normal mode (TRANS pin = “L”), the C, U and V bits are captured (either from the pins, in synchronous mode, or
the control registers, in the asynchronous mode) in the sub frame following the audio data. The V bit is set to zero to
indicate the audio data is suitable for conversion. See Figure 4 and Figure 5.
Audio routing mode (transparent mode)
In audio routing mode (transparent mode) (ANS pin = TRANS pin = “H”), the C, U and V bits are captured with the
same sub-frame as the data to which the C, U and V bits correspond. In all DIF modes except 5 and 7, the C, U and V
bits are captured at the first, rising edge of BICK after an LRCK transition. In modes 5 and 7 (I²S), the C, U and V bits
are captured at the second rising edge. See Figure 6 and Figure 7.
LRCK
Channel1
Channel 2
BICK
C,U,V
LRCK
Previous Channel 2
C, U, V
Figure 4. Normal, DIF modes 0/1/2/3/4/6
Channel 1
Channel 1
C,U,V
Channel 2
BICK
C,U,V
LRCK
Previous Channel 2
C, U, V
Figure 5. Normal, DIF modes 5 and 7 (I²S)
Channel 1
Channel 1
C, U, V
Channel 2
BICK
C,U,V
Channel 1
C, U, V
Figure 6. Audio routing, DIF modes 0/1/2/3/4/6
Channel 2
C, U, V
MS0251-E-01
- 13 -
2009/01