Denon S-81 - Page 45

45
S-81/S-81DAB
SPI-8002TW (IC901 : 1U-3762)
SPI-8001TW/SPI-8002TW
RESET
3V
1V
3V
AGND
SS16
Amp
Buffer-Amp
V REF1
7
V REF
V CC
3
14
C/E
V
IN1
2
TSDfdown
SW OUT1
DGND1
DGND2
V
IN2
4
5
15
13
AGND
fdown
cut
+
Ð
+
Ð
PWM
AGND
+
Ð
Ð
3V
SS211
Amp
Buffer-Amp
V REF2
10
12
SW OUT2
+
Ð
+
Ð
PWM
+
Ð
OSC
RESET
PRegStart
fdown
cut
Drive
PWM
Logic
OCP
OCP
Drive
PWM
Logic
UVLO
Ð
V CC
C/E
SS1
V
REF1
SS2
V
REF2
AGND
AGND
DGND2
SW
OUT2
V IN1
SW OUT1
DGND1
V
IN2
NC
NC
SK
1
8
16
9