-18-
IC 9037 Pin Description
Internal
Pin No.
Pin Name
I/O
Connection
Description
1, 2
C3, C4
0
NMOS
Matrix control key scanning outputs
3 - 7
R4 - R0
I
CMOS Pull-High
Matrix control key scanning inputs
Direct key inputs
8 - 44
KEY1 - KEY37
I
CMOS Pull-High
There are 22 full-scale and chromatic-key inputs for playing.
The scale is from C3 to C6.
45
VSS
I
-
Power supply (ground)
46
DEMO
I
CMOS Pull-High
ON/OFF demo song control input
The title of the demo song is “Green Sleeve”.
47
OUT1
O
Transmission Gate
Channel 1 tone output
48
ENV1
O
CMOS
Channel 1 envelope effect pin
49
OUT2
O
Transmission Gate
Channel 2 tone output
50
ENV2
O
CMOS
Channel 2 envelope effect pin
51, 52
TEST1, TEST2
I/O
CMOS
For IC test only
53
TEMLED
O
NMOS Open Drain
Tempo indication output
54
VDD
I
-
Power supply (positive)
55
VIBRATO
O
CMOS
Vibrato signal output
56
RESET
I
CMOS Pull-High
Power-on reset pin
57
TEST3
I/O
CMOS
For IC test only
58
OSC1
I
-
Oscillator input
59
OSC2
O
-
Oscillator output
60, 61
TEST4, TEST5
I
CMOS
For IC test only
62
CB
O
-
Cow-Bell pulsatile signal output
63
BD
O
-
Bass-Drum pulsatile signal output
64
SD
O
-
Snare-Drum pulsatile signal output
65
HH
O
-
High-Hat pulsatile signal output
66 - 68
C0 - C2
O
NMOS
Matrix control key scanning outputs
Содержание AK-900
Страница 24: ......
