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YMF715E
May 21, 1997
-4-
Multi-
p
ur
p
ose
p
ins : 13
p
ins
name
p
ins I/O t
yp
e size function
SEL2-0 3 I+ CMOS - Refer to “Multi-purpose pins” section
MP9-0 10 I+/O TTL 2mA Refer to “multi-purpose pins” section
Others : 27
p
ins
name
p
ins I/O t
yp
e size function
GP3-0 4 IA - - Game Port
GP7-4 4 I+
Schmitt
- Game Port
RXD 1 I+
Schmitt
- MIDI Data Receive
TXD 1 O TTL 4mA MIDI Data Transfer
/VOLUP 1 I+
Schmitt
- Hardware Volume (Up)
/VOLDW 1 I+
Schmitt
- Hardware Volume (Down)
X33I 1 I CMOS - 33.8688 MHz
X33O 1 O CMOS 2mA 33.8688 MHz
X24I 1 I CMOS - 24.576 MHz
X24O 1 O CMOS 2mA 24.576 MHz
AVDD 2 - - - Analo
g
Power Su
pp
l
y
(p
ut on +5.0V
)
DVDD 3 - - - Di
g
ital Power Su
pp
l
y
(p
ut on +5.0 V or +3.3V
)
AVSS 2 - - - Analo
g
GND
DVSS 4 - - - Di
g
ital GND
Total : 100 pins
Note :
I+: Input Pin with Pull up Resistor T: TTL-tri-state output pin
Schmitt: TTL-Schmitt input pin