RD-VH7
CIRCUIT DESCRIPTION
9
Pin No.
Pin Name
I/O
Descriptin
1
RELAY HP
O
Headphones relay control terminal.
2
RELAY SP
O
Speaker relay control.
3
DISP_RST
O
Reset for communication between display u-COM and u-COM(IC4).
4
DISP CE
O
Chip enable for communication between display u-COM and u-COM(IC4).
5
DISP OUT
O
Data out for communication between display u-COM and u-COM(IC4).
6
DISP IN
I
Data In for communication between display u-COM and u-COM(IC4).
7
DISP CLK
O
Clock for communication between display u-COM and u-COM(IC4).
8
BYTE
I
Connected to ground.
9
CNVSS
I
Connected to ground.
10
XCIN
I
Clock (32.768kHz).
11
XCOUT
O
Clock (32.768kHz).
12
RESET
I
Reset terminal of microprocessor.
13
XOUT
O
Main clock.
14
VSS
-
Ground.
15
XIN
I
Main clock.
16
VCC
-
Power 5V).
17
NMI
I
Connected to power 5V).
18
REMOCON
I
Remocon signal Input.
19
DQSY
I
Text data reading permission signal Input.
20
WRQ
I
Q code reading permission signal Input.
21
NC
O
Unused.
22
DIMMER
O
LCD back light dimmer.
23
COIN
O
Output terminal of u-COM data.
24
TGL
I
Change-over for tracking gain.
25
NC
O
Unused.
26
FSEQ
I
EMF synchronism signal Input.
27
NC
O
Unused.
28
CQCK
O
Clock output.
29
SQOUT
I
Sub code Q Input.
O
Unused.
I
Text data Input.
O
Clock for text data.
O
Unused.
O
Unused.
O
Unused.
O
Reset signal output.
I
Focus OK signal Input.
O
Read/write control output.
41
SL-
O
Moves the sled slightly toward the Inner position of disc.
42
SL+
O
Moves the sled slightly toward the outer position of disc.
43
LOADING
O
Change-over for mechanism l/-).
44
LOAD MUTE
O
Change-over for mechanism loading(ON/OFF).
45
NC
O
Unused.
46
LOAD_SW
I
Detection terminal for disc.
47,48
NC
O
Unused.
49
12DISC_SW
I
12cm disc detection terminal.
50
DOWN_SW
I
Control port of down motor for mechanism.
10-2 MICROPROCESSOR PIN DESCRIPTION
1p
99.10.30
3:08
PM
y [ W 5
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