Korg A4 Service Manual page 22

ADI 868(0
AC)
INTERNAL BLOCK
DIAGRAM
VBL
Vs
VoL
NRL
AGND
NRR
VoR
Vs
ADI
868 (D
AC)
PIN
FUNCTION
PIN NAME
I/O
FUNCTION
VL
—
POWER SUPPLY FOR DIGITAL CIRCUIT (+5V)
LL
I
L
CHANNEL LATCH ENABLE INPUT
DL
I
L
CHANNEL DATA INPUT
CK
I
CLOCK INPUT
DR
l
R
CHANNEL DATA INPUT
LR
I
R
CHANNEL LATCH ENABLE INPUT
DGND
—
GROUND FOR DIGITAL CIRCUIT
VBR
I
BIAS FOR
R
CHANNEL
Vs
—
POWER SUPPLY FOR ANALOG CIRCUIT
VOR 0 R
CHANNEL SIGNAL OUTPUT
NRR
I
R
CHANNEL NOISE REDUCTION
AGND
—
GROUND FOR ANALOG CIRCUIT
NRL
I
L
CHANNEL NOISE REDUCTION
VOL 0 L
CHANNEL SIGNAL OUTPUT
Vs
—
POWER SUPPLY FOR ANALOG CIRCUIT
VBL
I
BIAS FOR L
CHANNEL
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