KB-280
16
IC BLOCK DIAGRAM
SN74LV32APWR (X5647A00)
DMLCD: IC207
Quad 2 Input OR
SN74LV138APWR (X7284A00)
DMLCD: IC401, 402
3 to 8 Demultiplexer
BA4510F-E2 (X7300A00)
DMLCD: IC502
Dual Operational Amplifier
1
2
3
1A
1Y
4
2A
5
2B
6
2Y
7
GND
1B
14
13
12
Vcc
4A
11
4Y
10
3B
9
3A
8
3Y
4B
1
2
3
4
5
6
7
A
A
Select
Enable
Output
Output
B
B
C
C
G2A
G2A
G2B
G2B
G1
G1
Y7
Y7
Y5
Y4
Y3
Y2
Y1
Y0
Y6
16
15
14
13
12
11
10
Vcc
YO
Y1
Y2
Y3
Y4
Y5
8
GND
9
Y6
1
2
3
4
-V
8
7
6
5
Output 1
+V
+Input 1
VEE
VCC
Output 2
-Input 2
+Input 2
-Input 1
+
-
+
-
PIN
NO.
NAME
I/O
FUNCTION
PIN
NO.
NAME
I/O
FUNCTION
I
Master Clock
Rch Analog out(-)
I
Audio Serial Data Clock
Rch Analog out(+)
I
Audio Serial Date Input
Lch Analog out(-)
I
L/R Clock
Lch Analog out(+)
I
Power Down mode
Ground
I
Chip Select
Power Supply
I
Control Data Input
Rch Data Zero Input Detect
I
Control Data Input
Lch Data Zero Input Detect
1
2
3
4
5
6
7
8
MCLK
BICK
SDTI
LRCK
PDN
CSN
CCLK
CDTI
9
10
11
12
13
14
15
16
AOUTR-
AOUTR+
AOUTL-
AOUTL+
Vss
VDD
DZFR
DZFL
O
O
O
O
-
-
O
O
DMLCD: IC501
AK4385ET (X6040A00) DAC (Digital to Analog Converter)
Summary of Contents for PORTATONE KB-280
Page 3: ...KB 280 3 SPECIFICATIONS ...
Page 4: ...4 KB 280 PANEL LAYOUT q w 9 0 1 2 3 4 5 e y r t u i Front Panel A A ...
Page 5: ...KB 280 5 032 116 032 116 6 6 8 9 7 u i 6 7 8 9 0 1 2 3 4 o 0 4 5 6 7 8 1 2 3 Rear Panel A A ...
Page 19: ...19 KB 280 DMLCD Circuit Board Pattern side DMLCD 2NA WG23540 ...
Page 29: ...KB 280 29 INITIALIZATION Clr Frash ...
Page 31: ...KB 280 31 MIDI DATA FORMAT ...
