Ic Pin Function Description - Aiwa CX-JT7 Service Manual

6-33. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC309 BU2099FV (MULTI CONTROLLER)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Downloaded from www.Manualslib.com
Pin Name I/O
VSS — Ground terminal
NC — Not used
DATA I Serial data input from the tape mechanism controller
CLOCK I Serial data transfer clock signal input from the system controller
LCK I Serial data latch pulse clock signal input from the system controller
REC O Recording on/off control signal output terminal "L": recording
BIAS O Recording bias on/off control signal output terminal "L": bias on
A/B 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
PB MUTE O
"H": muting on
Recording muting on/off control signal output to the recording/playback equalizer amplifier
REC MUTE O
"L": muting on
TUNER MUTE O Tuner muting on/off control signal output to the tuner unit "H": muting on
LM-R (CD) O Loading motor drive signal output terminal
LM-L (CD) O Loading motor drive signal output terminal
TM-R (CD) O Table motor drive signal output terminal
TM-L (CD) O Table motor drive signal output terminal
O Front speaker on/off relay drive control signal output terminal "L": front speaker on
FRONT SPON/OFF
Surround speaker on/off relay drive control signal output terminal "H": surround speaker on
REAR SPON/OFF O
Not used
SO O Serial data output to the bass boost controller
OE — Not used
VDD — Power supply terminal (+3.3V)
manuals search engine
Description
CX-JT7
57