Onkyo DX-C390 Service Manual

DX-C390
MAIN MICROPROCESSOR TERMINAL DESCRIPTION-2
55 P123/RTP3 DACEMPHASYS O The de-emphasis control terminal of DAC. H=De-emphasis ON/L=OFF
56 P124/RTP4 O Not used. Open pin.
57 P125/RTP5 O Not used. Open pin.
58 P126/RTP6 SYSIN I RI system code input pin.
59 P127/RTP7 SYSOUT O RI system code output pin.
60 ~RESET RESET Reset pin of microprocessor.
61 P00/INTP0 EXIRIN I External IR input pin.
62 P01/INTP1 POFF I Power failure detection terminal. L=Power failure
63 P02/INTP2/NMI MP3INTB I The interruption signal input terminal from MP3 decode.
64 P03/INTP3 SCORI I The sub code detection terminal of the signal processing IC.
65 P04/INTP4 SUBREQ I The communication ready signal input terminal from sub microprocessor.
66 P05/INTP5 MP3FSYNC I FSYNC signal input pin from MP3 decoder.
67 Vss0 GND I GND
68 Vdd1 +5V I Power supply pin.
69 X2 CLOCK O Clock signal output pin. (12.5MHz OSCO)
70 X1 CLOCK I Clock signal input pin. (12.5MHz OSC)
71 TEST/Vpp GND I Flash ROM write-in voltage pin.
72 XT2 O Not used. Open pin.
73 XT1 GND I Not used. To connect GND pin.
74 Vdd0 +5V I Power supply pin.
75 AVdd +5V I Power supply pin for A/D port.
76 P10/ANI0 MODEL I Model name select pin. 0V=DX-C390/+5V=Other model
77 P11/ANI1 TIMING I The brake timing setting terminal of roulette. (0V=0msec
+5V=64msec)
78 P12/ANI2 GND I Not used. To connect GND pin.
79 P13/ANI3 GND I Not used. To connect GND pin.
80 P14/ANI4 GND I Not used. To connect GND pin.
Q701 : uPD784225GC
No. PIN NAME SIGNAL NAME I/O DESCRIPTION
GND GND GND TIMING MODEL +5V +5V GND GND CLOCK CLOCK +5V GND MP3FSYNC SUBREQ SCORI ~MP3INTB ~POF F
~EXIRIN
<-- <-- <-- <-- <-- <-- <-- <-- --> <-- <-- --> <-- <-- <-- <-- <-- <-- <-- <--
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
P14/ANI4 P13/ANI3 P12/ANI2 P11/ANI1 P10/ANI0
AVdd
Vdd0
XT1 XT2
TEST/V pp
X1 X2
Vdd1
Vss0
P05/INTP5 P04/INTP4 P03/INTP3
P02/INTP2/NMI
P01/INTP1 P00/INTP0
GND
-->
1
P15/ANI5 ~RESET
60
---
~RESET
GND
-->
2
P16/ANI6 P127/RTP7
59
-->
~SYSOUT
GND
-->
3
P17/ANI7 P126/RTP6
58
<--
SYSIN
GND
-->
4
AVss P125/RTP5
57
-->
<--
5
P130/ANO0 P124/RTP4
56
-->
<--
6
P131/ANO1 P123/RTP3
55
-->
DACEMPHASYS
+5V
-->
7
AVref1 P122/RTP2
54
-->
DACMUT
RXD
-->
8
P70/SI2/RxD2 P121/RTP1
53
<--
EEPROMDO
TXD
<--
9
P71/SO2/TxD2 P120/RTP0
52
-->
EEPROMDI
GND
-->
10
P72/~SCK2/ASCK2 P37/EXA
51
-->
EEPROMCLK
MSI
-->
11
P20/SI1/RxD1 P36/TIO1
50
-->
EEPROMCS
MSO
<--
12
P21/SO1/TxD1 P35/TIO0
49
-->
~DITPD
~MSCK
<--
13
P22/~SCK1/ASCK1 P34/TI2
48
-->
DITCE
DOUT
<--
14
P23/PCL P33/TI1
47
-->
DITCL
SUBRST
<--
15
P24/BUZ P32/TO2
46
-->
DITDO
SUBSO
-->
16
P25/SI0/SDA0 P31/TO1
45
<--
DITDI
SUBSI
<--
17
P26/SO0 P30/TO0
44
-->
SUBCL
<--
18
P27/~SCK0/SCL0 P67/ASTB
43
-->
CDSUB
Q
<--
19
P40/AD0 P66/~WAIT
42
-->
~LOADINGR
~CDCOM
<--
20
P41/AD1 P65/~WR
41
-->
~LOADING
L
P42/AD2 P43/AD3 P44/AD4 P45/AD5 P46/AD6 P47/AD7
P50/A8 P51/A9
P52/A10 P53/A11 P54/A12 P55/A13
V ss1
P56/A14 P57/A15 P60/A16 P61/A17 P62/A18 P63/A19
P64/~ RD
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
--> --> <-- --> --> <-- --> --> --> --> <-- <-- <-- --> --> --> <-- <-- <-- <--
~MP3COM ~MP3CE SENSI ~CDXLT SCLKO FOKI LDON ~CDRESET CDPOWE R CDMUT STOP POS SEN
S
DISC_SEN S GND ~ROT_R ~ROT_L ~ROTHI LOADING_SW1 LOADING_SW2 LOADING_SW3 ~CURRENT
uPD784225GC
PIN LAYOUT
43 of 63

Onkyo DX-C390 Specifications

General

CD-RW playback	Yes
Device type	Portable CD player
Programmable tracks	40