Aiwa XR-DV3M Service Manual page 67

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Pin No. Pin Name
76 USDA
77 UML
78 UMC
79 UMD
__________________
80 WDTOVF
______________
81 RESET
82 NMI
___________
83 STBY
84 VCC
85 XTAL
86 EXTAL
87 VSS
88 fO
89 VCC
______
90 AS
______
91 RD
__________
92 HWR
__________
93 LWR
____________
94 WAIT
TE
L 13942296513
95 PFO
96 HRST
97, 98 UC17, 16
99, 100 VSS
101 UC15
102 TEST MUTE
103 AVCC
104 VREF
105 ECOHVOL
___________
106, 107 NTSC/PAL, REGION
108 RDY_HIF
109 SW
110 C2PO
111 EMPH
112 SV2
113 AVSS
114 VSS
115 A_RESET
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116 RGB/YC
117 KARAOKE
118 CS-KARAOKE
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I/O
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I/O I C data input/output terminal for EERROM, video encoder IC.
O Data enable signal output terminal for AUDIO DAC IC control.
O Clock for AUDIO DAC IC control.
O Data output terminal for AUDIO DAC IC control.
O Watch dog timer overflow signal output terminal.
I Micro processor reset input terminal.
I
Fixed is to "H".
I
I Power input terminal. EVER 5 V.
I
Crystal oscilator input terminal. 20 MHz.
I
I GND.
— Not used. (System clock output for external device.)
I Power input terminal. EVER 5 V.
— Not used. (Address strobe.)
O Lead signal output terminal for bus control.
O "H" write signal output terminal for bus control.
O "L" write signal output terminal for bus control.
O Bus request output terminal.
— Not used. (Bus request acknowlege.)
O Reset signal output terminal for LOADER.
— Not used.
I GND.
— Not used.
O Q SURROUND IC control terminal. ON = H OFF = L.
I Power supply input terminal for A/D. EVER 5V.
I Reference voltage input terminal for A/D. EVER 5V.
I Not used. (ECOH VOL input terminal for KARAOKE)
I NTSC/PAL Switch jumper for REGION.
I LOADER READY signal input terminal.
I Not used. (Changeover SW to NTSC/PAL)
I Not used. (Error signal to CD DSP)
I Not used. (Emphasis signal to CD DSP)
O Voltage output for S2 terminal. S1 = 5V S2 = 2.5 V Normally = 0 V.
I
GND.
I
O Not used. (Reset signal for 5.1ch DEC)
O Not used. (Switch signal to RGB/YC)
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O Not used. (Switch signal to ON/OFF to KARAOKE DSP)
y
O Not used. (Chip select signal for KARAOKE)
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