57
HCD-RV22/RV55
• IC371 BU2099FV (SP DRIVER) (MAIN BOARD (2/2))
Pin No.
Pin Name
I/O
Pin Description
1
VSS
—
Ground pin
2
N.C.
—
Not used. (Open)
3
DATA
I
Serial data input from the motor/plunger driver
4
CLOCK
I
Serial data transfer clock signal input from the system controller
5
LCH
I
Latch pulse signal input from the system controller
6
Q0
O
Recording/playback selection signal output
7
Q1
O
Recording bias control signal output
8, 9
Q2, Q3
O
Not used. (Fixed at “L” in this set.)
10
Q4
O
CD muting on/off control signal output
11
Q5
O
Tuner muting on/off control signal output
12
Q6
O
Power amplifier on/off control signal output
13
Q7
O
Loading motor drive signal output
14
Q8
O
Loading motor drive signal output
15
Q9
O
Table motor drive signal output
16
Q10
O
Table motor drive signal output
17
Q11
O
Front speaker on/off relay drive control signal output
18
SO
O
Serial data output Not used (Connect to ground in this set.)
19
OE
—
Not used. (Open)
20
VDD
—
Power supply pin (+3.3 V)