Sharp SM-307H - Page 8

SM-307H
©
List of Vacuum Fluorescent Tube (Graphic
Equalizer/Spectrum Analyzer) Drive Microcomputer
Terminals (LC7565)
Pin No.| Pin Name
ua
Function
TEST 2
Al
A2
A3
A4
AS
AG
A7
A8
AQ
own Oonrh WOH =
Connect to vacuum fluorescent tube anode
(drive output)
Selection terminal when chip is used.
Connect to GND terminal
Microcomputer data input terminal
Microcomputer clock input terminal
Connect to GND terminal
Terminal to connect externally provided CR
for oscillation
f1 ~ f7 For setting the indication time
holding rest time
T For setting the indication time holding
rest time
Connect to GND terminal
Input audio signal of set band which passes
through B.P.F with rectified voltage
Connect to GND terminal
Connect to grid of vacuum fluorescent tube
(drive output)
Power supply terminal
List of Amplifier Drive Microcomputer Terminals
(LC6522C)
Pin Name
Function
-10—
OnN OOP WHY =
AF1
KO
K1
K2
K3
K4
K5
SENS
REMOTE
POWER
VR IND
VR DOWN
VR UP
SEL 4 (PH)
SEL 3 (CD)
SEL 2 (TA)
SEL 1 (TU)
SEL 6 (VCR}
SEL 5 (TV)
MUTE 1
BASS
VDD
PAO
Connect to GND terminal
Key matrix
Not used
Key matrix
Clock signal output for control
Data signal output for control
Chip enabling signal for control
Not used
Test terminal. Connect to GND terminal
Connect to GND terminal
Clock oscillation. Connect quartz oscillator.
Not used
Clock oscillation. Connect quartz oscillator.
Reset input
Connect to GND terminal
ON/OFF
Initial/backup/start judgment/power
down detection
Not used
Player indicator drive output
CD indicator drive output
TAPE indicator drive output
TUNER indicator drive output
VCR indicator drive output
TV indicator drive output
Muting output
Not used
Power supply terminal
Key matrix