ak4126 AKM Semiconductor, Inc., ak4126 Datasheet - Page 13

• Manufacturer Part Number: ak4126
• Description: 6ch 192khz / 24-bit Asynchronous Src
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The input port works in slave mode. The clocks supply ILRCK and IBICK externally. An internal system clock is created
by the internal PLL using ILRCK (Mode 0 ∼ 2 of Table 2) or IBICK (Mode 4, 5, 7of Table 2). The PLL2-0 pins and
IDIF2-0 pins select the PLL mode. The PLL2-0 pins and IDIF2-0 pins should be controlled when PDN pin = “L”.
The IDIF2-0 pins select the audio interface format for the input port. The audio data is MSB first, 2’s complement format.
The SDTI is latched on the rising edge of IBICK. Select the audio interface format when PDN pin = “L”. The audio
interface format of SDTI1, SDTI2 and SDTI3 becomes the same setting. The maximum input frequency of IBICK is 64fsi.
MS0544-E-00
System Clock & Audio Interface Format for Input PORT
Note 11. PLL lock rage is changed by the value of R and C connected FILT pin. Refer to “PLL Loop Filter”.
Note 12. The IBCIK must be continuous except when the clocks are changed.
Note 13. IBCIK = 32fsi is supported only 16bit LSB justified and I
Note 14. Refer to “Soft Mute Operation” for Manual mode and Semi-Auto mode.
Mode
0
1
2
3
4
5
6
7
Mode
0
1
2
3
4
5
6
7
PLL2
H
H
H
H
L
L
L
L
IDIF2
H
H
H
H
L
L
L
L
Table 1. Input Audio Interface Format (Input PORT)
PLL1
IDIF1
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
Table 2. PLL Setting (Input PORT)
OPERATION OVERVIEW
IDIF0
PLL0
H
H
H
L
H
L
L
L
H
H
H
H
L
L
L
L
24/16bit, I
24/20bit, MSB justified
16k ∼ 192kHz
8k ∼ 192kHz
8k ∼ 192kHz
8k ∼ 192kHz
ILRCK Freq
- 13 -
8k ∼ 96kHz
16bit, LSB justified
20bit, LSB justified
24bit, LSB justified
(Note 11)
(Note 12)
(Note 12)
SDTI Format
2
S Compatible
32fsi (Note 13)
Reserved
Reserved
Reserved
Depending on
IBICK Freq
(Note 12)
Reserved
IDIF2-0
2
Reserved
S Compatible.
64fsi
64fsi
IBICK Frequency
≥ 48fsi or 32fsi
≥ 32fsi
≥ 40fsi
≥ 48fsi
≥ 48fsi
Semi-Auto
Semi-Auto
(Note 14)
SMUTE
Manual
Manual
[AK4126]
2006/09