AK4601VQ Datasheet, PDF (50/111 Pages) Asahi Kasei Microsystems – Audio HUB CODEC with Digital Mixer

[AK4601]
3. Input/Output Serial Interface Format
3-1. Data Clocks
The AK4601 has two independent BICK/LRCK pins that are able to switch master and slave mode.
MSNx bit selects Master/Slave mode of the BICKx pin and the LRCKx pin (Table 16). Clock format of
LRCKx/BICKx pins can be selected by DCFx[2:0] bits. If a BICK/LRCK pins are master mode, desirable
clock format is output according to DCFx[2:0] bits setting (Table 22). If a BICK/LRCK pins are slave
mode, set DCFx[2:0] bits according to the input clock format.
Mode
0
1
2
3
DCFx[2]
0
1
1
1
DCFx[1] DCFx[0]
Clock Format
0
0
I²S Mode
0
1
DSP Mode
1
0
PCM Short Frame
1
1
PCM Long Frame
Table 22. AK4601 Data Clock Format
(default)
Clock edge relationship can be controlled by BCKPx bit.
BCKPx bit BICKx Edge Referenced to LRCKx Start Edge
0
Falling Edeg (FE)
(default)
1
Rising Edge (RE)
Table 23. Clock Edge Relationship between BICKx and LRCKx
016000391-E-01
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2016/12