ASAHI KASEI
[AK4125]
MS0379-J-01
2005/05
- 1 -
AK4125
(SRC)
8kHz
216kHz
8kHz
216kHz
PLL
/DVD
1. SRC
Asynchronous Sample Rate Converter
Input Sample Rate Range (fsi): 8kHz
216kHz
Output Sample Rate Range (fso): 8kHz
216kHz
Input to Output Sample Rate Ratio: 1/6 to 6
THD+N:
-
130dB
Dynamic Range: 140dB (A-weighted)
I/F format: MSB justified, LSB justified and I
2
S compatible
PLL for Internal Operation Clock
Clock for Master mode: 128/192/256/384/512/768fsi, 128/192/256/384/512/768fso
SRC Bypass mode
Soft Mute Function
2. Power Supply
AVDD, DVDD: 3.0
3.6V (typ. 3.3V)
3. Ta =
-
40
85
C
4. Package: 30pin VSOP
5. AK4124 Pin-compatible
PLL
PDN
SMUTE
OLRCK
OBICK
SDTO
OMCLK
Serial
Audio
I/F
SRC
Serial
Audio
I/F
ILRCK
SDTI
IBICK
PLL1
PLL2
IDIF2 IDIF1 IDIF0
ODIF1 ODIF0
OBIT1
OBIT0
UNLOCK
IMCLK
AVDD AVSS DVDD DVSS
CMODE2 CMODE1 CMODE0
PLL0
DITHER
192kHz / 24Bit High Performance Asynchronous SRC
AK4125
ASAHI KASEI
[AK4125]
MS0379-J-01
2005/05
- 4 -
No. Pin
Name
I/O
Function
1
FILT
O
PLL Loop Filter Pin
2 AVSS
- Analog
Ground
Pin
3 PDN
I
Power-Down Mode Pin
"H": Power up, "L": Power down reset and initializes the control register.
4 SMUTE
I
Soft Mute Pin
"H": Soft Mute, "L": Normal Operation
5 DITHER
I
Dither Enable Pin
"H": Dither ON, "L": Dither OFF
6
PLL2
I
PLL Mode Select 2 Pin
7
ILRCK
I/O Input Channel Clock Pin
8
IBICK
I/O Audio Serial Data Clock Pin
9
SDTI
I
Audio Serial Data Input Pin
10 IDIF0
I
Audio Interface Format 0 Pin for Input PORT
11 IDIF1
I
Audio Interface Format 1 Pin for Input PORT
12 IDIF2
I
Audio Interface Format 2 Pin for Input PORT
13 PLL0
I
PLL Mode Select 0 Pin
14 PLL1
I
PLL Mode Select 1 Pin
15 UNLOCK
O Unlock
Status
Pin
16 OBIT0
I
Bit Length Select 0 Pin for Output Data
17 OBIT1
I
Bit Length Select 1 Pin for Output Data
18 IMCLK
I
Master Clock Input Pin for Input PORT
19 CMODE0
I
Clock Mode Select 0 Pin
20 CMODE1
I
Clock Mode Select 1 Pin
21 CMODE2
I
Clock Mode Select 2 Pin
22 ODIF0
I
Audio Interface Format 0 Pin for Output PORT
23 ODIF1
I
Audio Interface Format 1 Pin for Output PORT
24 SDTO
O
Audio Serial Data Output Pin for Output PORT
25 OBICK
I/O Audio Serial Data Clock Pin for Output PORT
26 OLRCK
I/O Output Channel Clock Pin for Output PORT
27 OMCLK
I
Master Clock Input Pin for Output PORT
28 DVDD
-
Digital Power Supply Pin, 3.0
3.6V
29 DVSS
-
Digital Ground Pin
30 AVDD
-
Analog Power Supply Pin, 3.0
3.6V
Note: All input pins should not be left floating.
ASAHI KASEI
[AK4125]
MS0379-J-01
2005/05
- 5 -
Analog FILT
SMUTE, DITHER
DVSS
IMCLK, OMCLK
DVSS@
Digital
UNLOCK
(AVSS, DVSS=0V; Note 1)
Parameter Symbol
min
max
Units
Power Supplies:
Analog
Digital
|AVSS
- DVSS| (Note 2)
AVDD
DVDD
GND
-0.3
-0.3
-
4.6
4.6
0.3
V
V
V
Input Current, Any Pin Except Supplies
IIN
-
10 mA
Digital Input Voltage
VIND
-0.3 DVDD+0.3
V
Ambient Temperature (Power applied)
Ta
-40 85
C
Storage Temperature
Tstg
-65 150
C
Note 1.
Note 2. AVSS, DVSS
:
(AVSS, DVSS=0V; Note 1)
Parameter Symbol
min
typ
max
Units
Power Supplies
(Note 3)
Analog
Digital
AVDD
DVDD
3.0
3.0
3.3
3.3
3.6
AVDD
V
V
Note 1.
Note 3. AVDDDVDD
:
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