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Kenwood KDC-9026R Service Manual page 11

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QQ
MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
Pin No.
Pin Name
109,110
NC
111
SA RST
112
3.3V VDD
113
EVSS
114~117
NC
118~123
A21~A16
124
2.5V VDD
125
VSS
126~133
A15~A8
134
3.3V VDD
135
EVSS
136~143
A7~A0
144
D15
CD MECHANISM CONTROL MICROPROCESSOR : UPD63761GJ (X32-552 : IC7)
Pin No.
Pin Name
TE
1
AVREF0
L 13942296513
2
AVSS
3
SLD1
4
SLD2
5
AVREF1
6
D-MUTE
7
BMS
8
IC/FLMD0
9
VDD
10
REGC
11
VSS
12,13
X1/X2
14
RESET
15~17
NC
18
MSTOP
19
INTSV
20
FOGUP
21
FOK
22
E2P_SDA
www
23
E2P_CLK
24~26
NC
.
27
TZC
28
LIM_SW
I/O
-
NC
O
Reset for spectrum analyzer (H : Reset, L : Normal)
-
AVR 3.3V
-
GND
-
NC
O
Address bus
-
AVR 2.5V
-
GND
O
Address bus
-
AVR 3.3V
-
GND
O
Address bus
I/O
External ROM data input/output terminal
I/O
-
Reference voltage to A/D converter
-
GND (For AD converter)
O
Stepping motor control terminal 1
O
Stepping motor control terminal 2
I
Reference voltage to D/A converter
O
MUTE driver (L : MUTE ON)
O
BMS MODE (L : R-BRAKE)
-
FLASH memory writing voltage output
-
AVR (3.3V)
-
Connect to 1u capacitor
-
GND
-
System clock
I
Reset input terminal (L : RESET)
-
NC
I
Interrupt for Standby mode (L : STOP)
I
Interrupt for servo IC
I
Interrupt for focus gain up (L : NORMAL)
I
Focus condition detect (L : Focus OK)
I/O
E2P I2C data for ROM correction
O
E2P I2C clock for ROM correction
x
ao
u163
y
-
NC
i
I
Tracking Zero cross input terminal
I
Pickup inside detector (L : Inside)
2 9
8
Description / Processing Operation
Description / Processing Operation
Q Q
3
6 7
1 3
1 5
co
.
KDC-9026R/PSW9527
KDC-W9027/X979
9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9
11

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