Casio Oriental Maestro AT1, Руководство по обслуживанию

Страница: 15 / 28

— 13 —
MAJOR WAVEFORMS
1
2
1
Main clock pulse
HD6433298A36P pin 7
2 DSP clock pulse
HG51B155FD pin 12
3
5
3 POWER signal
HD6433298A36P pin 13
4
APO signal
HD6433298A36P pin 3
4
5
RESET signal
HD6433298A36P pin 11
Power switch ON
6
6
LED segment signal LD0
HD6433298A36P pin 31
7 LED segment signal LD3
HD6433298A36P pin 34
7
Display: "0.0"
8
8 Key scan signal KC0
HG52E35P pin 44
9 Key scan signal KC1
HG52E35P pin 45
9
0
A
0 Key scan signal KC2
HG52E35P pin 46
A Key scan signal KC3
HG52E35P pin 47
B
B Bit clock BOK
UPD6376CX pin 16
C L/R clock WOK1
UPD6376CX pin 13
C
D
E
D Sound data SOLP (Note OFF)
E Sound data SOLP (Note ON)
UPD6376CX pin 15
F
F Button scan signal KO0
IC304: TC74HC174AP pin 2
G
Button scan signal KO1
IC304: TC74HC174AP pin 5
G
H
I
H
Button scan signal KO2
IC304: TC74HC174AP pin 7
I
Button scan signal KO3
IC304: TC74HC174AP pin 15
J DAC output
UPD6376CX pin 11
K DAC output
UPD6376CX pin 6
J
K
Tone: No. 78
Key: A4
Touch response: OFF
Digital effect: OFF
Volume: Maximum
L Power amp. input
LA4598 pin 10
M Power amp. input
LA4598 pin 6
L
M