Denon S-81 Service Manual page 27

Pin
Pin Name
No.
60 P20/A0/A16 34STANBY
61 P21/A1/A17 34SRMSTB
62 DVSS DVSS
63 NMI NMI
64 DVCC DVCC
65 P22/A2/A18
66 P23/A3/A19 DOUTSEL
67 P24/A4/A20
68 P25/A5/A21 14RESET
69 P26/A6/A22 14CCE
70 P27/A7/A23 14BUCK
71 P30/RD
72 P31/WR
73 P32/HWR 14BUS3
74 P33/WAIT 14BUS2
75 P34/BUSRQ 14BUS1
76 P35/BUSAK 14BUS0
77 P36/R/W GVSW
78 P37/BOOT BOOT
79 P40/CS0 DRVMUTE
80 P41/CS1 INSW
81 P42/CS2
82 P43/CS3
83 P60/SCK
84 P61/SO/SDA 34MIDIO
85 P62/SI/SCL 34MICK
86 P63/INT0
87 P64/SCOUT
88 P65
89 DVCC DVCC
90 P66
91 DVSS DVSS
92 P50/AN0
93 P51/AN1
94 P52/AN2
95 P53/AN3/ADTRG
96 P54/AN4
97 P55/AN5
98 P56/AN6
99 P57/AN7 LD_CHK
100 VREFH VREFH
Symbol I/O Initial
O L
O L
- -
I -
- -
- O L
O L
- O L
O L
O H
O L
- O L
- O L
I/O L
I/O L
I/O L
I/O L
O L
I -
O H
I -
- O L
- O L
- O L
I/O L
O L
- O L
- O L
- O L
- -
- O L
- -
- I -
- I -
- I -
- I -
- I -
- I -
- I -
I -
- -
Standby control output to TC94A34FG(MP3/WMA DECORDER)
SRAM Standby control output to TC94A34FG(MP3/WMA DECORDER)
GND
Not used (Pull down)
+3.3V
Not used
DOUT SELECT output to TC7WH157 ( L:CD-DA / H:MP3/WMA )
Not used
Reset output to TC94A14FA(Servo DSP)
Chip Enable output to TC94A14FA(Servo DSP)
Serial Clock output to TC94A14FA(Servo DSP)
Not used
Not used
DATA BUS to TC94A14FA(Servo DSP)
DATA BUS to TC94A14FA(Servo DSP)
DATA BUS to TC94A14FA(Servo DSP)
DATA BUS to TC94A14FA(Servo DSP)
Gain SW SELECT output to TA2157FNG(RF_AMP)
Use for the WRITING (L:BOOT)
Drive Mute output to TA2125AF(Driver)
Inner-Switch input from CD MECHA
Not used
Not used
Not used
Data I/O to TC94A34FG(MP3/WMA DECORDER)
Clock output to TC94A34FG(MP3/WMA DECORDER)
Not used
Not used
Not used
+3.3V
Not used
GND
Not used (Pull down)
Not used (Pull down)
Not used (Pull down)
Not used (Pull down)
Not used (Pull down)
Not used (Pull down)
Not used (Pull down)
Current check of LD
+3.3V (AD converter VREFH)
27
S-81/S-81DAB
Function
( H:Mute / L:Normal )