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AKD4125-A Datasheet(PDF) 3 Page - Asahi Kasei Microsystems

Part # AKD4125-A
Description  digital sample rate converter.
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AKD4125-A Datasheet(HTML) 3 Page - Asahi Kasei Microsystems

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ASAHI KASEI
[AKD4125-A]
<KM078701>
2006/04
- 3 -
(2) All clocks are fed through the 10pin port
When using PORT2 (INPUT), nothing should be connected to J1 (COAX) and PORT1 (DIR).
JP2
IBICK
JP3
SDTI
JP4
ILRCK
• SW3 setting (See Table 2)
Upper-side is “H” and lower-side is “L”.
SW3 No.
Name
ON (“H”)
OFF (“L”)
Default
1
DITH
Dither ON
Dither OFF
L
2
PLL2
H
3
PLL1
L
4
PLL0
PLL Mode Setting
Refer to Table 3
H
5
IDIF0
L
6
IDIF1
H
7
IDIF2
AK4125 Audio I/F Format Setting
Refer to Table 4
L
Table 2. SW3 Setting
Mode
Master / Slave
PLL2
PLL1
PLL0
ILRCK Freq
IBICK Freq
IMCLK
SMUTE
(Note 4)
0
L
L
L
8k ∼ 96kHz
1
L
L
H
Manual
2
L
H
L
8k
∼ 216kHz
16k
∼ 216kHz
(Note 1)
Depending on
IDIF2-0
Not
needed.
Semi-Auto
3
L
H
H
Reserved
4
H
L
L
32fsi (Note 3)
5
H
L
H
64fsi
6
H
H
L
128fsi
Manual
7
Slave
IMCLK = DVSS
IBICK = Input
ILRCK = Input
H
H
H
8k
∼ 216kHz
(Note 2)
64fsi
Not
needed.
Semi-Auto
8
L
L
L
8k
∼ 216kHz
128fs
9
L
L
H
8k
∼ 108kHz
256fs
10
L
H
L
8k ∼ 54kHz
512fs
Manual
11
L
H
H
8k
∼ 216kHz
128fs
Semi-Auto
12
H
L
L
8k
∼ 216kHz
192fs
13
H
L
H
8k ∼ 108kHz
384fs
14
H
H
L
8k
∼ 54kHz
768fs
Manual
15
Master
IMCLK = Input
IBICK = Output
ILRCK = Output
H
H
H
8k ∼ 216kHz
64fs
192fs
Semi-Auto
Table 3. PLL Setting (Input PORT)
Note 1. PLL lock rage is changed by the value of R and C connected FILT pin. Refer to “PLL Loop Filter” in the
datasheet. 470Ω, 0.22µF and 1nF are implemented on the evaluation board.
Note 2. The IBCIK must be continuous except when the clocks are changed.
Note 3. IBCIK = 32fsi is supported only 16bit LSB justified and I
2S Compatible.
Note 4. Refer to “Soft Mute Operation” for Manual mode and Semi-Auto mode in the datasheet.


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