Yamaha Disklavier MPX100II Servis Kılavuzu - Sayfa 10

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LSI PIN DESCRIPTION

• HD6473308F10 (XQ458A00) CPU (H8/330)
Reset
XTAL
Clock
EXTAL
MD1
Mode select
MD0
Non-maskable interupt
stand-by mode signal
Power supply
VCC
P52
Port 5
A R x D
A T x D
(Transmit data)
Ground
VSS
P97
P96
(Address strobe)
AS
(Write strobe)
(Read strobe)
P92
P91
Port 9
P90
P60
P61
P62
P63
Port 6
P64
P65
P66
P67
AVCC
Analog power supply
AN0
AN1
AN2
Analog input
AN3
AN4
AN5
AN6
AN7
AVSS
Analog ground
P40
Port 4
P41
• PCM1702U (XP551A00) DAC (Digital to Analog Converter)
Data input
DATA
CLK
Clock
NC
+ Vdd
Power supply ( + 5A)
D GND
Digital ground
-Vdd
Power supply ( - 5A)
L.E
Latch enable
NC
NC
NC
Function
FUNCTION
Function
Port 4
Power supply
Address bus
Ground
Address bus
Data bus
Ground
Port 8
Power supply ( + 5A)
Bipolar decouple
Output current
Analog ground
Servo decouple
Reference decouple
Power supply ( - 5A)
MPX100II
8