ASAHI KASEI
[AK4569]
PIN/FUNCTION
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Pin Name
PDN
CSN
CCLK
CDTI
LRCK
MCLK
BICK
SDTI
SDTO
DVDD
DVSS
HVSS
HVDD
HPR
HPL
MUTET
MOUT
MIN
RIN
LIN
VREF
I/O
I
I
I
I
I
I
I
I
O
-
-
-
-
O
O
O
O
I
I
I
O
Function
Power-down Pin
When “L”, the AK4569 is in power-down mode and is held in reset. The AK4569
should always be reset upon power-up.
Control Data Chip Select Pin
Control Clock Input Pin
Control Data Input Pin
L/R Clock Pin
This clock determines which audio channel is currently being output on SDTO pin and
input on SDTI pin.
Master Clock Input Pin
Serial Bit Clock Pin
This clock is used to latch audio data.
Audio Data Input Pin
Audio Data Output Pin
SDTO pin goes to DVSS when PDN pin is “L”.
Digital Power Supply Pin
Digital Ground Pin
Ground Pin for Headphone Amplifier
Power Supply Pin for Headphone Amplifier
Rch Headphone Amplifier Output Pin
HPR pin goes to HVSS when PDN pin is “L”.
Lch Headphone Amplifier Output Pin
HPL pin goes to HVSS when PDN pin is “L”.
Mute Time Constant Control Pin
A capacitor for mute time constant should be connected between MUTET pin and
HVSS pin. MUTET pin goes to HVSS when PDN pin is “L”.
Mono Analog Output Pin
MOUT pin goes to Hi-Z when PDN pin is “L”.
Mono Analog Input Pin
Rch Analog Input Pin
Lch Analog Input Pin
Reference Voltage Output Pin, 2.1V (typ, respect to AVSS)
Normally connected to AVSS pin with 0.1µF ceramic capacitor in parallel with a 4.7µF
electrolytic capacitor. VREF pin goes to AVSS when PDN pin is “L”.
Common Voltage Output Pin, 1.25V (typ, respect to AVSS)
Normally connected to AVSS pin with 0.1µF ceramic capacitor in parallel with a 2.2µF
electrolytic capacitor. VCOM pin goes to AVSS when PDN pin is “L”.
Analog Ground Pin
Analog Power Supply Pin
Rch Analog Input 2 Pin for ADC (MIC Input)
Lch Analog Input 2 Pin for ADC (MIC Input)
Rch Analog Input 1 Pin for ADC (LINE Input)
Lch Analog Input 1 Pin for ADC (LINE Input)
22
23
24
25
26
27
28
VCOM
AVSS
AVDD
AINR2
AINL2
AINR1
AINL1
O
-
-
I
I
I
I
Note: No digital input pins must be left floating.
MS0292-E-01
-4-
2005/07
AKM [ ASAHI KASEI MICROSYSTEMS ]
