ASAHI KASEI
[AK4319A]
Audio Serial Interface Format
Data is shifted in via the SDATA pin using BICK and LRCK inputs. Four serial data modes can be
selected by the DIF0 and DIF1 pins as shown in Table 2 . In all modes the serial data is MSB-first, 2's
compliment format and is latched on the rising edge of BICK. Mode 2 can be used for 16 MSB justified
formats by zeroing the unused LSBs.
DIF1 DIF0
Mode
BICK
≥32fs
≥36fs
≥36fs
Figure
Figure 2
Figure 2
Figure 3
0
0
1
0
1
0
0: 16bit LSB Justified
1: 18bit LSB Justified
2: 18bit MSB Justified
1
1
3: I2S Compatible
Figure 4
≥36fs
or 32fs
Table 2 . Serial Data Modes
Figure 3 . Mode 0,1 Timing
Figure 4 . Mode 2 Timing
Figure 5 . Mode 3 Timing
M0011-E-01
1998/6
- 10 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
