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Table 2-4
NMA1 Pin Descriptions
Pin name
Number
ADFLTR
1
VOCOL
1
VOCOR
1
VOCIL
1
VOCIR
1
Miscellaneous pins: 14 pins
SYEN
1
SYCS
1
SYCLK
1
SYLR
1
SYIN
1
SYCLKO
1
RSVD
8
Others: 27 pins
RXD
1
TXD
1
/VOLUP
1
/VOLDW
1
X33I
1
X33O
1
X24I
1
X24O
1
AVDD
2
DVDD
3
AVSS
2
DVSS
7
2-42
I/O
Right input filter
O
Left voice output
O
Right voice output
I
Left voice input
I
Right voice input
I
External synthesizer enable input
O
External synthesizer chip select output
I
External synthesizer clock input or ZV clock input
I
External synthesizer L/R clock input or ZV L/R clock input
I
External synthesizer data input or ZV data input
O
External synthesizer master clock output
Reserved for future use
I+
MIDI Data Receive
O
MIDI Data Transfer
I+
Hardware Volume(Up)
I+
Hardware Volume(Down)
I
33.8688MHZ
O
33.8688MHZ
I
24.576MHZ
O
24.576MHZ
Analog Power Supply(put on +5.0V)
Digital Power Supply(put on +5.0V or +3.3V)
Analog GND
Digital GND
Description
Service Guide
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