AK4601VQ Datasheet, PDF (57/111 Pages) Asahi Kasei Microsystems – Audio HUB CODEC with Digital Mixer

[AK4601]
5-5. TDM Mode
AK4601 supports TDM mode. BICK clock for data input/output should be set to 128fs, 192fs, 256fs or
512fs when using TDM mode. Up to 192kHz in 128fs mode (max. fs=128kHz in 192 mode, max.
fs=96kHz in 256 mode, max. fs=48kHz in 512 mode) sampling frequency is supported.
The SDIN1 input pin of the AK4601 support TDM mode. Sixteen slots data input is available at a
maximum. A source address is assigned to each 2 slot of SDIN1 input pin when using TDM mode.
(Table 20). DISL1[1:0] bits control input data slot length of the SDIN1 pin. DIDL1 [1:0] bits control the
input data word length of the SDIN1 pin. The slot data format is set by DILSBE1 bit.
In TDM mode, DIEDGEN1 bit must be set to “1” since the data transmission timing after second channel
are slot length basis. Slot length, word length and slot data format of each input data slot should be the
same setting.
The SDOUT1 output pins of the AK4601 support TDM mode. Sixteen slots data output is available for
each pin at a maximum. Each slot data can be assigned independently by setting SELDO1A-H[5:0] bits
in every two slots. DOSL1[1:0] bits control output data slot length of the SDOUT1 pin. DODL1[1:0] bits
control the output data word length of the SDOUT1 pin. The slot data format is set by DOLSBE1 bit. In
TDM mode, DOEDGEN1 bit must be set to “1” since the data transmission timing after second channel
are slot length basis. Slot length, word length and slot data format of each input data slot should be the
same setting.
Setting example of TDM mode is shown in Table 29.
Mode Data Format
0
I²S Compatible
1
MSB Justified
2
LSB Justified
3 PCM Short Frame
4 PCM Long Frame
5
Irregular I²S
DCF1[2:0]
DILSBE1
DOLSBE1
DIEDGEN1
DOEDGEN1
DISL1 [1:0]
DOSL1[1:0]
000
0
1
11 (32bit)
101
0
1
11 (32bit)
101
1
1
11 (32bit)
110
0
1
Slot Length
111
0
1
Slot Length
000
0
1
Slot Length
Table 29. TDM Mode Setting Example
DIDL1 [1:0]
DODL1[1:0]
Word Length
Word Length
Word Length
Word Length
Word Length
Word Length
016000391-E-01
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2016/12