Aiwa XD-DV300, Service Manual

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Pin No. Pin Name I/O Description
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97, 98
99, 100
101
102
103
104
105
106, 107
108
109
110
111
112
113
114
115
116
117
118
119
USDA
UML
UMC
UMD
__________________
WDTOVF
______________
RESET
NMI
___________
STBY
VCC
XTAL
EXTAL
VSS
fO
VCC
______
AS
______
RD
__________
HWR
__________
LWR
____________
WAIT
PFO
HRST
UC17, 16
VSS
UC15
Q_SURROUND
AVCC
VREF
ECHOVOL
P41, 42
RDY_HIF
SW
C2PO
EMPH
SV2
AVSS
VSS
A_RESET
RGB/YC
KARAOKE
CS-KARAOKE
AMUTE
I/O
O
O
O
O
I
I
I
I
I
I
I
—
I
—
O
O
O
O
—
O
—
I
—
O
I
I
—
—
I
—
—
—
O
I
I
—
—
—
—
O
I 2 C data input/output terminal for EERROM, video encoder IC.
Data enable signal output terminal for AUDIO DAC IC control.
Clock for AUDIO DAC IC control.
Data output terminal for AUDIO DAC IC control.
Watch dog timer overflow signal output terminal.
Micro processor reset input terminal.
Fixed is to “H”.
Power input terminal. EVER 5 V.
Crystal oscilator input terminal. 20 MHz.
GND.
Not used. (System clock output for external device.)
Power input terminal. EVER 5 V.
Not used. (Address strobe.)
Lead signal output terminal for bus control.
“H” write signal output terminal for bus control.
“L” write signal output terminal for bus control.
Bus request output terminal.
Not used. (Bus request acknowlege.)
Reset signal output terminal for LOADER.
Not used.
GND.
Not used.
Q SURROUND IC control terminal. ON = H OFF = L.
Power supply input terminal for A/D. EVER 5V.
Reference voltage input terminal for A/D. EVER 5V.
Not used.
LOADER READY signal input terminal.
Not used.
Voltage output for S2 terminal. S1 = 5V S2 = 2.5 V Normally = 0 V.
GND.
Not used.
Audio signal (analog audio) output mute control terminal ON = H OFF = L.
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