Denon S-81 Service Manual page 36

Pin No. Symbol I/O
O
38 S EL
AI/F
-
39 AV ˇ
DD3
O
40 FMO
AI/F
O
41 DMO
AI/F
-
42 V ˇ
SS3
-
43 V ˇ
DD3
I
44 TE SIN
3I/F
-
45 XV ˇ
SS3
I
46 X I
AI/F
O
47 XO
AI/F
-
48 XV ˇ
DD3
-
49 DV ˇ
SS3
O
50 RO
AI/F
-
51 DV ˇ
DD3
-
52 DV R ˇ
O
53 LO
AI/F
-
54 DV ˇ
SS3
O
55 ZDE T
3-5I/F
-
56 V ˇ
SS5
57 B US0
58 B US1
I/O
3-5I/F
59 B US2
60 B US3
I
61 B UCK
3-5I/F
I
62 / CCE
3-5I/F
I
63 / RST
3-5I/F
-
64 V ˇ
DD5
Function Description
APC circuit ON/OFF signal output pin. At laser on, high
impedance with UHS ı "L", H output with UHS ı "H".
Analog 3.3 V power supply voltage pin.
Feed equalizer output pin.
Disc equalizer output pin.
Digital GND pin.
Digital 3.3 V power supply voltage pin.
Test input pin. Normally, fixed to "L".
System clock oscillator GND pin.
System clock oscillator input pin.
System clock oscillator output pin.
System clock oscillator 3.3 V power supply voltage pin.
DA converter GND pin.
R-channel data forward output pin.
DA converter 3.3 V power supply pin.
Reference voltage pin.
L-channel data forward output pin.
DA converter GND pin.
1 bit DA converter zero data detection flag output pin.
Microcontroller interface GND pin.
Microcontroller interface data I/O pins.
Microcontroller interface clock input pin.
Microcontroller interface chip enable signal input pin. At "L",
BUS0 to BUS3 are active.
Reset signal input pin. At reset, "L".
Microcontroller interface 5 V power supply pin.
36
S-81/S-81DAB
Remarks
3-state output
-
ˇ
3-state output
=
(PWM carrier ı 88.2 kHz)
(AV , V , AV )
DD3 REF SS3
-
-
-
-
-
-
-
-
-
-
-
-
-
ˇ
-
ˇ
-
ˇ
Schmitt input
CMOS ports
Schmitt input
Schmitt input
Built-in pull-up resistor
-
ˇ