— 6 —
CPU
LSI101
UPD912GF-3BA
Sound Source ROM
LSI102
TC534200CF-C116
CE
A0 ~ A17
D0 ~ D15
MA1 ~
MA18
MD0 ~
MD15
MSB0
FI0 ~ FI9
SI0 ~ SI9
SO
BOK
LRCK
PG
X101
20 MHz
DAC
IC105
UPD6379GR
LOUT
ROUT
SO: Sound data
BOK: Bit clock
LRCK: Word clock
SI
CLK
LRCK
From keyboard
Pin No.
Terminal
In/Out
Function
15, 16
XLT0, XLT1
In/Out
20 MHz clock input/output
17
VCC
In
+5 V source
18, 19
MD0, MD1
In
Mode selection terminal. Connected to ground.
20
RSTB
In
Reset signal input
21
NMI
In
Power ON signal input
22
INT
—
Not used. Connected to ground.
23 ~ 30
FI0 ~ FI3
SI0 ~ SI3
In
Key input signal
31 ~ 38
KC0 ~ KC7
Out
Key scan signal output
39 ~ 50
FI4 ~ FI9
SI4 ~ SI9
In
Key input signal
51
FI10
In
Not used
52
SI10
In
Not used
53
KI0
In
Button input signal input
54
KI1
—
Not used
55
KI2
Out
LED drive signal
56 ~ 58
—
Not used
59 ~ 76
MA1 ~ MA18
Out
Address bus
77
MCSB0
Out
Chip enable signal output for the sound source ROM
78, 79
—
Not used
80
VCC
In
+5 V source
81
GND
In
Ground (0 V) source
82
MRDB
Out
Read enable signal output for the sound source ROM
83 ~ 98
MD0 ~ MD15
In/Out
Data bus
99
PLE
In
Sustain signal input
100
P17
In
APO cancellation signal input
Block diagram of digital circuits
Содержание CPS-7
Страница 1: ...ELECTRONIC KEYBOARD without price CPS 7 CPS 7...
Страница 11: ...11 KEYBOARD PCBs JCM762T KY1M KY2M...
Страница 12: ...12 EXPLODED VIEW 8 7 3 1 4 5 6 6 9 10 12 13 15 11 14 15 1 15 2 20 18 17 16 2 19...
Страница 16: ...MA0900951A...
