ak4120 AKM Semiconductor, Inc., ak4120 Datasheet - Page 18

• Manufacturer Part Number: ak4120
• Description: Sample Rate Converter With Mixer And Volume
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
n Audio Serial Interface Format
Four serial data modes can be selected by the I2S pin and D5-D0 bits in register 00H as shown in Table 6 8. In all
modes the serial audio data is MSB-first, 2’s compliment format. The SDTO is clocked out on the falling edge of
BICKO and the SDTI1 and SDTI2 are latched on the rising edge of BICKI1 and BICKI2.
Note: When the Audio Serial Interface Mode is changed, the AK4120 should be powered down using the PW bit.
MS0134-E-00
(“PW”=0)
I2S pin
I2S pin
I2S pin
H
L
L
L
L
H
H
L
L
L
L
L
L
L
L
DIFI11
DIFI21
DIFO1
X
X
0
0
1
1
X
0
0
1
1
0
0
1
1
Table 6. Audio data formats for Input#1 port
Table 7. Audio data formats for Input#2 port
DIFI10
Table 8. Audio data formats for Output port
DIFI20
DIFO0
X
0
1
0
1
X
X
0
1
0
1
0
1
0
1
20bit, MSB justified
20bit, I
20bit, LSB justified
16bit, LSB justified
20bit, I
20bit, MSB justified
20bit, I
20bit, LSB justified
16bit, LSB justified
20bit, I
20bit, MSB justified
20bit, I
20bit, LSB justified
16bit, LSB justified
20bit, I
2
2
2
2
2
2
S
S
S
S
S
S
- 18 -
SDTI1
SDTI2
SDTO
LRCK
LRCK
LRCK
H/L
L/H
H/L
H/L
L/H
H/L
L/H
H/L
H/L
L/H
H/L
L/H
H/L
H/L
L/H
Default
Default
Default
[AK4120]
2002/1