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AK4529 View Datasheet(PDF) - Asahi Kasei Microdevices

Part NameDescriptionManufacturer
AK4529 High Performance Multi-channel Audio CODEC AKM
Asahi Kasei Microdevices AKM
AK4529 Datasheet PDF : 38 Pages
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ASAHI KASEI
[AK4529]
n Audio Serial Interface Format
When TDM= “L”, four modes can be selected by the DIF1-0 as shown in table 7. In all modes the serial data is MSB-first,
2’s compliment format. The SDTO is clocked out on the falling edge of BICK and the SDTI/DAUX are latched on the
rising edge of BICK.
Figures 14 shows the timing at SDOS = “L”. In this case, the SDTO outputs the ADC output data. When SDOS = “H”,
the data input to DAUX is converted to SDTO’s format and output from SDTO. Mode 2, 3, 6 and 7 in SDTI input formats
can be used for 16-20bit data by zeroing the unused LSBs.
Mode
0
1
2
3
TDM
0
0
0
0
DIF1
0
0
1
1
DIF0
0
1
0
1
SDTO
24bit, Left justified
24bit, Left justified
24bit, Left justified
24bit, I2S
SDTI1-4, DAUX
20bit, Right justified
24bit, Right justified
24bit, Left justified
24bit, I2S
LRCK
H/L
H/L
H/L
L/H
BICK
48fs
48fs
48fs
48fs
Default
Table 7. Audio data formats (Normal format)
The audio serial interface format becomes the TDM I/F format if TDM pin is set to “H”. In the TDM mode, the serial data
of all DAC (eight channels) is input to the SDTI1 pin. The input data to SDTI2-4 pins is ignored. BICK should be fixed to
256fs. “H” time and “L” time of LRCK should be 1/256fs at least. Four modes can be selected by the DIF1-0 as shown in
table 8. In all modes the serial data is MSB-first, 2’s compliment format. The SDTO is clocked out on the falling edge of
BICK and the SDTI1 are latched on the rising edge of BICK. SDOS and LOOP1-0 should be set to “0” at the TDM mode.
TDM mode cannot be used in double speed mode.
Mode
4
5
6
7
TDM
1
1
1
1
DIF1
0
0
1
1
DIF0
0
1
0
1
SDTO
24bit, Left justified
24bit, Left justified
24bit, Left justified
24bit, I2S
SDTI1
20bit, Right justified
24bit, Right justified
24bit, Left justified
24bit, I2S
Sync
BICK
256fs
256fs
256fs
256fs
Table 8. Audio data formats (TDM format)
MS0082-E-00
- 17 -
2001/3
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