6
KDC-V7521/Y
Pin No.
Pin Name
I/O
Description
Processing Operation
33
XT2
-
Sub clock resonator connection terminal
34
REGC
-
Capacitor conection terminal for regulator inside
microprocessor
Oscillation : POWER ON mode, Oscillation stop :
35
X2
-
Main clock resonator connection terminal
POWER OFF mode or momentary power down
detected
36
X1
I
Main clock resonator connection terminal
37
VSS
-
Ground connection terminal
Connected to GND lines.
38
VDD
-
Positive power supply connection terminal
Connected to BU 5V lines.
39
CLKOUT
O
Internal system clock output
Not used (N.C.)
40,41
N.C.
O
Not used (N.C.)
42
TYPE0
I
Destination type selection terminal 0
43
TYPE1
I
Destination type selection terminal 1
44
TYPE2
I
Destination type selection terminal 2
45
N.C.
O
Not used (N.C.)
46
IC2 TYPE0
I
IC2 setting terminal
Lo : Initial value
47
IC2 TYPE1
I
IC2 setting terminal
Lo : Initial value
48
CH-REQH
O
Request output to changers
Lo : Request
49
CH-RST
O
Reset output to changers
: Reset
50
CH-MUTE
I
Mute request from changers
Hi : Mute request
51
CH-CON
O
Changer control
Lo : Standby mode, Hi : Operation mode
52
ILL-ON
O
Illumination AVR on/off control output
Hi : POWER ON mode except panel detached
53
M-MUTE L
I
Mute request (L Ch.) from CD MECHA. MI-COM.
Lo : Mute request
54
M-MUTE R
I
Mute request (R Ch.) from CD MECHA. MI-COM. Lo : Mute request
55
BVDD
-
Positive power supply connection terminal
Connected to BU 5V lines.
56
BVSS
-
Ground connection terminal
Connected to GND lines.
57
M-RST
O
Reset output to CD mechanism MI-COM.
Lo : Reset
58
M-STOP
O
Stop request to CD mechanism MI-COM.
Lo : Stop mode, Hi : Operation mode
59
N.C.
O
Not used (N.C.)
60
LO/EJ
I/O
CD mechanism loading/Eject switching output
Lo : Loading, Hi : Eject, Hi-Z : Stop or Break
61
MOSW
O
CD mechanism loading motor control output
Hi : CD loading/eject action or Break, Lo : other
62
N.C.
O
Not used (N.C.)
63
CD-SW3
I
Down & limit switch detection input
Hi : Chucking, Lo : Pickup most inner position
64
DA-SDA/NC
O
Clock output to D/A converter (V-LED model)
Lo : Panel detached, momentary power down
detected
65
LCE
O
CE output to LCD driver IC
66-69
N.C.
O
Not used (N.C.)
70
AV CONT
O
A/D converter reference voltage control output
Hi : Active, Connected to AVREF terminal
71
AVDD
-
A/D converter positive power supply connection
Connected to BU 5V lines.
terminal
MICROCOMPUTER’S TERMINAL DESCRIPTION
Summary of Contents for KDC-V7521/Y
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