Onkyo DX-C390 Service Manual

DX-C390
IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
Q501 : LC78683E MP3 DECODER FOR CD
CD-DA shockproof
(Compressed or
uncompressed)
CDROM
decoder
MP3
decoder
M
U
X
Audio I/F
CPU-I/F
CKIN
VPRF
R
VCOC
VPDO
CKOUT
INTB
CMDOUT
CMDIN
CE
CL
MDATA[15:0]
MADRS[12:0]
RASB
CASUB
CASLB
OEB
WEB
LRSY
DATACK
DATAIN
C2FIN
SFSY
P
W
SBSY
SBCK
RESB
A
DLRCK
A
DBCK
A
DDATA
WOK
CNTOK
OVF
Data-I/F
FSYNC
CRCF
STREQ
STCK
STDAT
System
clock-
generator
VCO
PLL
DRAM-I/F
80 79 78
77
76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
LC78684
(Top view)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CKOUT
VSS
PW
SFSY
SBS
Y
A
VDD
SBC
K
A
DDAT
A
LRSY
TEST2
A
DBC
K
C2FIN
A
DLRC
K
CKIN
TEST1
VCOC
VPRFR
DVDD1
VPDO
A
VSS
DATACK DATAIN
RESB
INTB CE
CL CMDIN CMDOUT
OVF
CNTOK WOK
VSS
DVDD6 CRCF FSYNC STDAT
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
MADRS0
RASB
MADRS2
MADRS1
MADRS4
MADRS3
DVDD4
MADRS5
MADRS9
MADRS8
MADRS12
MADRS10
CASUB
OEB
WEB
CASLB
MADRS11
VSS
MADRS7
MADRS6
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
MDATA2 MDATA3
MDATA4 MDATA5 MDATA8
VSS
MDATA9
MDATA10 MDATA11
MDATA7
DVDD3
MDATA6
MDATA13 MDATA14
MDATA15
21 22 23 24
DVDD2
VSS
MDATA0 MDATA1
STCK STREQ VSS DVDD5
MDATA12
PIN ASSIGNMENT
BLOCK DIAGRAM
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Onkyo DX-C390 Specifications

General

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