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6-31. IC PIN FUNCTION DESCRIPTION
• MAIN BOARD IC309 BU2099FV (MULTI CONTROLLER)
Pin No.
Pin Name
1
VSS
2
NC
3
DATA
4
CLOCK
5
LCK
6
REC
7
BIAS
8
A/B
9
PB MUTE
10
REC MUTE
11
TUNER MUTE
12
LM-R (CD)
13
LM-L (CD)
14
TM-R (CD)
15
TM-L (CD)
16
FRONT SPON/OFF
17
REAR SPON/OFF
18
SO
19
OE
20
VDD
I/O
—
Ground terminal
—
Not used
I
Serial data input from the tape mechanism controller
I
Serial data transfer clock signal input from the system controller
I
Serial data latch pulse clock signal input from the system controller
O
Recording on/off control signal output terminal "L": recording
O
Recording bias on/off control signal output terminal "L": bias on
O
Deck-A/B selection signal output to the deck-A/B select switch "L": deck-B, "H": deck-A
Playback muting on/off control signal output to the recording/playback equalizer amplifier
O
"H": muting on
Recording muting on/off control signal output to the recording/playback equalizer amplifier
O
"L": muting on
O
Tuner muting on/off control signal output to the tuner unit "H": muting on
O
Loading motor drive signal output terminal
O
Loading motor drive signal output terminal
O
Table motor drive signal output terminal
O
Table motor drive signal output terminal
O
Front speaker on/off relay drive control signal output terminal "L": front speaker on
O
Surround speaker on/off relay drive control signal output terminal "H": surround speaker on
O
Serial data output to the bass boost controller
—
Not used
—
Power supply terminal (+3.3V)
Description
CX-JT9
55
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