21
HCD-GX45/RG440
SECTION 5
DIAGRAMS
5-1. IC PIN DESCRIPTIONS
• IC309 BU2099FV (MULTI CONTROLLER) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
VSS
—
Ground pin
2
NC
—
Not used. (Open)
3
DATA
I
Serial data input from the tape mechanism controller
4
CLOCK
I
Serial data transfer clock signal input from the system controller
5
LCK
I
Serial data latch pulse clock signal input from the system controller
6
REC
O
Recording on/off control signal output “L”: recording
7
BIAS
O
Recording bias on/off control signal output “L”: bias on
8
A/B
O
Deck-A/B selection signal output to the deck-A/B select switch
“L”: deck-B, “H”: deck-A
9
PB MUTE
O
Playback muting on/off control signal output to the recording/playback equalizer
amplifier “H”: muting on
10
REC MUTE
O
Recording muting on/off control signal output to the recording/playback equalizer
amplifier “L”: muting on
11
TUNER MUTE
O
Tuner muting on/off control signal output to the tuner unit “H”: muting on
12
LM-R (CD)
O
Loading motor drive signal output
13
LM-L (CD)
O
Loading motor drive signal output
14
TM-R (CD)
O
Table motor drive signal output
15
TM-L (CD)
O
Table motor drive signal output
16
SP RERAY
O
Front speaker on/off relay drive control signal output “L”: front speaker on
17
LINK/MATRIX
O
Surround speaker on/off relay drive control signal output “H”: surround speaker on
18
SO
O
Serial data output to the bass boost controller
19
OE
—
Not used. (Connect to ground.)
20
VDD
—
Power supply pin (+3.3 V)
