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4.1 AK4381VT-X (IC481) : D/A converter
• Pin layout
MCLK
1
BICK
2
SDTI
3
LRCK
4
PDN
5
CSN
6
CCLK
7
CDTI
8
• Block diagram
CSN
CCLK
CDTI
LRCK
BICK
SDTI
• Pin functions
Pin No.
Symbol
1
MCLK
2
BICK
3
SDTI
4
LRCK
5
PDN
6
CSN
7
CCLK
8
CDTI
9
AOUTR-
10
AOUTR+
11
AOUTL-
12
AOUTL+
13
VSS
14
VDD
15
DZFR
16
DZFL
SECTION 4
Description of major ICs
16
DZFL
15
DZFR
14
VDD
13
VSS
12
AOUTL+
11
AOUTL-
10
AOUTR+
9
AOUTR-
De-emphasis
uP
Control
Interface
8X
Audio
Interpolator
Data
Interface
8X
Interpolator
PDN
I/O
I
Master clock input terminal
I
Audio serial data clock terminal
I
Audio serial data input terminal
I
L/R Clock terminal
I
Power down mode terminal
I
Chip select
I
Control data input terminal
I
Control data input terminal
O
Rch negative analog output terminal
O
Rch positive analog output terminal
O
Lch negative analog output terminal
O
Lch positive analog output terminal
-
Connect to ground
-
Power supply terminal
O
Rch data zero input detection terminal
O
Lch data zero input detection terminal
MCLK
Clock
Divider
Modulator
Modulator
Description
VDD
VSS
DZFL
DZFR
AOUTL+
SCF
AOUTL-
AOUTR+
SCF
AOUTR-
(No.49799)1-27
KD-S890
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