AK4129 AKM [Asahi Kasei Microsystems], AK4129 Datasheet - Page 27

• Manufacturer Part Number: AK4129
• Description: 6ch 216kHz / 24-Bit Asynchronous SRC
• Manufacturer: AKM [Asahi Kasei Microsystems]

Mode
10
11
12
13
14
15
■
The ODIF1-0 pins and OBIT1-0 pins select the audio interface format for the output port. The audio data is MSB first, 2’s
complement format. The SDTO1-3 is clocked out on the falling edge of OBICK. Select the audio interface format for
output port when the PDN pin = “L”. If the AK4129 is in slave mode at bypass mode, IBICK1 and OBICK must be
synchronized but the phase is not critical. ILRCK1 and OLRCK must be synchronized but the phase is not critical. The
audio interface format of SDTO1, SDTO2 and SDTO3 are controlled together by ODIF1-0 pins, OBIT1-0 pins and TDM
pin. Output ports become TDM mode when the TDM pin = “H”. In TDM mode, the SDTI1 pin outputs serial data for
6channels and the SDTI2-3 pins output “L”.
(* The data length for 1channel is 24bit fixed in TDM mode. The OBIT1-0 pin settings are ignored. Connect these pins to
MS1173-E-01
0
1
2
3
4
5
6
7
8
9
Audio Interface Format for Output PORT
VSS2-5.)
TDM
pin
H
L
Mode
(CM2-0 = “HLL”
(CM2-0 = “HLL”
0
1
2
3
4
5
6
7
Master / Slave
“HLL”/“HHL”)
“HLL”/“HHL”)
(Not CM2-0 =
(Not CM2-0 =
or “HHL”)
or “HHL”)
setting
Master
Master
Slave
Slave
TDM pin
H
H
H
H
L
L
L
L
OBIT1
Table 6. Output PORT Audio Interface Format 1
Table 7. Output PORT Audio Interface Format 2
ODIF1 pin
pin
H
H
H
H
L
L
L
L
*
*
H
H
H
H
L
L
L
L
OBIT0
pin
H
H
H
H
L
L
L
L
*
*
ODIF0 pin
H
H
H
H
L
L
L
L
TDM256
TDM256
SDTO
- 27 -
mode
mode
16bit
18bit
20bit
24bit
16bit
18bit
20bit
24bit
24bit
24bit
1-3
TDM256 mode 24bit I
TDM256 mode 24bit MSB justified
Output
Output
OLRC
Input
Input
K
SDTO1-3 Format
I
MSB justified
2
LSB justified
OBICK
S Compatible
Output
Output
Input
Input
Reserved
Reserved
Reserved
2
S Compatible
MSB justified,
≥ 32FSO
≥ 36FSO
≥ 40FSO
≥ 48FSO
OBICK Frequency
I
2
S
256FSO
256FSO
64FSO
[AK4129]
2010/09
justified
64FSO
LSB