AK4618 Datasheet, PDF (26/60 Pages) Asahi Kasei Microsystems – 192kHz 24-bit 6ch/12ch Audio CODEC with Microphone Interface

[AK4618]
■ Audio Serial Interface Format
(1) Stereo Mode
When TDM1-0 bits = “00”, ten modes can be selected by the DIF2-0 bits as shown in Table 10. In all modes the serial data
is MSB-first, 2’s compliment format. The data SDTO is clocked out on the falling edge of BICK and the SDTI1-6 is
latched on the rising edge of BICK.
Mode3/4/8/9/13/14/18/19/23/24/28/29/33/34/38/39 in SDTI input formats can be used for 16-20bit data by zeroing the
unused LSBs.
Mode M/S TDM1 TDM0 DIF2 DIF1 DIF0 SDTO1-3 SDTI1-6
LRCK
I/O
BICK
I/O
0
0
0
0
0
0
0
24bit, Left
justified (*)
16bit, Right
justified
H/L
I
32fs
64fs
I
1
0
0
0
0
0
1
24bit, Left
justified
20bit, Right
justified
H/L
I
48fs
64fs
I
2
0
0
0
0
1
0
24bit, Left
justified
24bit, Right
justified
H/L
I
48fs
64fs
I
3
0
0
0
0
1
1
24bit, Left
justified
24bit, Left
justified
H/L
I
48fs
64fs
I
4
0
0
0
1
0
0
24bit, I²S 24bit, I²S L/H I ^48fs I (default)
64fs
5
1
0
0
0
0
0
24bit, Left
justified
16bit, Right
justified
H/L
O
64fs
O
6
1
0
0
0
0
1
24bit, Left
justified
20bit, Right
justified
H/L
O
64fs
O
7
1
0
0
0
1
0
24bit, Left
justified
24bit, Right
justified
H/L
O
64fs
O
8
1
0
9
1
0
0
0
1
1
24bit, Left
justified
24bit, Left
justified
H/L
O
64fs
O
0
1
0
0
24bit, I²S 24bit, I²S L/H O 64fs O
Table 10. Audio Data Formats (Stereo mode)
(*)When the BICK is less than 48fs, the output data length from SDTO is limited to the clock number of BICK in the half
LRCK period.
015000617-E-00
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2015/01