KD-SC900R
1-28 (No.49829)
SECTION 4
Description of major ICs
4.1 AK4381VT-X (IC481) : D/A converter
• Pin layout
• Block diagram
MCLK
BICK
SDTI
LRCK
PDN
CSN
CCLK
CDTI
DZFL
DZFR
VDD
VSS
AOUTL+
AOUTL-
AOUTR+
AOUTR-
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Description
Master clock input terminal
Audio serial data clock terminal
Audio serial data input terminal
L/R Clock terminal
Power down mode terminal
Control data input terminal
8
CDTI
I
Control data input terminal
9
AOUTR-
O
Rch negative analog output terminal
10
AOUTR+
O
Rch positive analog output terminal
11
AOUTL-
O
Lch negative analog output terminal
12
AOUTL+
O
Lch positive analog output terminal
13
VSS
-
Connect to ground
14
VDD
-
Power supply terminal
15
DZFR
O
Rch data zero input detection terminal
16
DZFL
O
Lch data zero input detection terminal
De-emphasis
Control
8X
Interpolator
uP
Interface
Audio
Data
Interface
CSN
CCLK
CDTI
LRCK
BICK
SDTI
PDN
8X
Interpolator
Modulator
SCF
SCF
Clock
Divider
VDD
VSS
DZFL
DZFR
MCLK
AOUTL+
AOUTR+
AOUTR-
AOUTL-
Modulator
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299