Yamaha Disklavier MPX100II, Service Manual

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MPX100 II
LSI PIN DESCRIPTION
•
HD6473308F10 (XQ458A00) CPU (H8/330)
Reset
Clock
Mode select
Non-maskable interupt
stand-by mode signal
Power supply
Port 5
(Transmit data)
Ground
(Address strobe)
(Write strobe)
(Read strobe)
Port 9
Port 6
Analog power supply
Analog input
Analog ground
Port 4
Port 4
Power supply
Address bus
Ground
Address bus
Data bus
Ground
Port 8
Function Function
XTAL
EXTAL
MD1
MD0
VCC
P52
A R x D
A T x D
VSS
P97
P96
AS
P92
P91
P90
P60
P61
P62
P63
P64
P65
P66
P67
AVCC
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AVSS
P40
P41
• PCM1702U (XP551A00) DAC (Digital to Analog Converter)
Power supply ( + 5A)
Bipolar decouple
Output current
Analog ground
Servo decouple
Reference decouple
Power supply ( - 5A)
Data input
Clock
Power supply ( + 5A)
Digital ground
Power supply ( - 5A)
Latch enable
FUNCTION
DATA
CLK
NC
+ Vdd
D GND
-Vdd
L.E
NC
NC
NC
8