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Description of major ICs
AK4324(NIC1) : D/A Converter
1. Pin layout
DVSS
1
DVDD
2
CKS
3
MCLK
4
PD
5
BICK
6
SDATA
7
LRCK
8
SMUTE
9
DFS
10
DEM0
11
DEM1
12
2. Block diagram
LRCK
BICK
SDATA
PD
SMUTE
DFS
3. Pin function
Pin
Symbol
I/O
No.
1
DVSS
-
Digital ground terminal
2
DVDD
-
Digital power supply terminal
3
CKS
I
Master clock select pin
4
MCLK
I
Master clock input pin
5
PD
I
Power down mode pin
6
BICK
I
Audio serial data clock pin
7
SDATA
I
Audio serial data input
8
LRCK
I
L/R clock pin
9
SMUTE
I
Soft mute pin
10
DFS
I
Double speed sampling mode
11
DEM0
I
De-emphasis frequency select
12
DEM1
I
De-emphasis frequency select
24
DZFL
23
DZFR
22
AVDD
21
VREF
20
AVSS
19
AOUTL+
18
AOUTL-
17
AOUTR+
16
AOUTR-
15
DIF2
14
DIF1
13
DIF0
DIF0 DIF1 DIF2
DEM0 DEM1
De-emphasis
Serial Input
Control
Interface
8x
Interpolator
Modulator
8x
Interpolator
Modulator
Clock OSC/Divider
MCLK
CKS DVDD DVSS
Function
AVDD AVSS
SCF
SCF
VREF
Pin
Symbol
Function
I/O
No.
13
DIF0
I
Digital input format pin
14
DIF1
I
Digital input format pin
15
DIF2
I
Digital input format pin
16
AOUTR-
O
Rch negative analog output
17
AOUTR+
O
Rch positive analog output
18
AOUTL-
O
Lch negative analog output
19
AOUTL+
O
Lch positive analog output
20
AVSS
-
Analog ground terminal
21
VREF
I
Voltage reference input
22
AVDD
-
Analog power supply terminal
23
DZFR
O
Rch zero input detect pin
24
DZFL
O
Lch zero input detect pin
XL-R910SL
DZFL
AOUTL+
AOUTL-
AOUTR+
AOUTR-
DZFR
1-11
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