Denon UD-M31 Service Manual page 10

Pin
Port Symbol
No.
33 AVSS AVSS
34 P130/ANO0 LINE1
35 P131/ANO1 LINE2
36 AVref1 Avref1
37 P70/RxD2/SI2 SQOUT
38 P71/TxD2/SO2 COIN
39 P72/ASCK2/ CQCK
SCK2
40 P20/RxD1/SI1 NC
41 P21/TxD1/SO1 FLDT
42 P22/ACSK1/ FLCLK
SCK1
43 P23/PCL NC
44 P24/BUZ /RDSRST
45 P25/SI0/SDA0 DB RXD
46 P26/SO0 DB TXD
47 P27/SCK0/SCL0 DB CLK
48 P80/A0 /SD
49 P81/AÇP /ST INC
50 P82/A2 /TMUTE
51 P83/A3 AUTO/MONO
52 P84/A4 USA
53 P85/A5 EURO
54 P86/A6 FREQ
55 P87/A7 RDS
56 P40/AD0 SL+
57 P41/AD1 SL-
58 P42/AD2 CD/!RW
59 P43/AD3 SERACH
60 P44/AD4 NC
61 P45/AD5 NC
62 P46/AD6 LED POWER G
63 P47/AD7 LED POWER R
64 P50/A8 NC
65 P51/A9 NC
66 P52/A10 CLSW
67 P53/A11 OPSW
68 P54/A12 NC
69 P55/A13 NC
70 P56/A14 NC
71 P57/A15
72 VSS VSS
73 P60/A16 BLK
74 P61/A17 DATXD
75 P62/A18 DACLK
76 P63/A19 DACE
77 P64/RD DRP_RST
78 P65/WR
79 P66/WAIT PWBCHK
I/O Function
- A/D,D/A converter GND position
O LINE OUT Control signal output1
O LINE OUT Control signal output2
- D/A converter reference voltage input
I Sub Q code data input
O CD-DSP serial communication data output
O CD-DSP serial communication clock output
I Pull up
O DATA BUS for FL driver, Data output
O DATA BUS for FL driver, Clock output
I Pull up
O RDS IC reset output
I DATA BUS for DENON BUS Data input
O DATA BUS for DEON BUS
O DENON BUS Clock output
I FM/AM Tuning signal input, Tuned:Low
I FM stereo demodulation detect input, Ste-
reo:Low
O Tuner mute output, mute:Low
O FM AUTO/MONO switching, MONO:High
I Initial setting input
I Initial setting input
I Initial setting input
I Initial setting input
O SLIDE kick Forward
O SLIDE kick Reverse
O CD, CD-RW gain switching
O SEARCH control
O OPEN
O OPEN
O POWER/STANDBY Green LED out-
put,Light:High
O POWER/STANDBY Red LED output,Light:High
I Pull up
I Pull up
I LOADER CLOSE SW input
I LOADER OPEN SW input
I Pull up
I Pull up
I Pull up
O Not used :NC
- GND potential
O FLD ON/OFF control port, L= black out FLD
O DATA BUS(for VOL,PLL,RDS IC, EEPROM)
Data output
O DATA BUS(for VOL,PLL,RDS IC, EEPROM)
Clock output
O DATA BUS(for VOL,PLL,RDS IC) Chip enable
output
O CD-DSP reset output, output, reset:High
O Not used :NC
I Start PWB check mode
10
RECIEVER or CD
OTHER
OTHER
OTHER
OTHER
CD
CD
CD
RECIEVER
RECIEVER
RECIEVER
RECIEVER
RECIEVER
RECIEVER
Data output RECIEVER
RECIEVER
RECIEVER
RECIEVER
RECIEVER
RECIEVER
RECIEVER
RECIEVER
RECIEVER
RECIEVER
CD
CD
CD
CD
CD
CD
CD
CD
CD
CD
CD
CD
CD
OTHER
OTHER
RECIEVER
RECIEVER
RECIEVER
CD
OTHER
OTHER
UD-M31 10
outputs of
standby&Defoult
-
L
L
-
L
L
L
-
L
L
-
-
-
L
L
-
-
L
L
-
-
-
-
L
L
L
L
L
L
-
-
-
-
-
-
-
L
-
L
L
L
L
L
-