55
Pin No.
Pin Name
I/O
Description
110 to 112
MA2, MA4, MA3
O
Address signal output to the D-RAM (IC507) and program ROM (IC508)
113
VDD
—
Power supply terminal (+3.3V)
114
MA12
O
Address signal output to the D-RAM (IC507) and program ROM (IC508)
115
VSS
—
Ground terminal
116
MA13
O
Address signal output to the D-RAM (IC507) and program ROM (IC508)
117
VDD
—
Power supply terminal (+3.3V)
118
MA14
O
Address signal output to the D-RAM (IC507) and program ROM (IC508)
119
VSS
—
Ground terminal
120 to 122 MA15 to MA17
O
Address signal output to the D-RAM (IC507) and program ROM (IC508)
123
VDD
—
Power supply terminal (+3.3V)
124
MA18
O
Address signal output to the D-RAM (IC507) and program ROM (IC508)
125
VSS
—
Ground terminal
126, 127
MA19, MA20
O
Address signal output terminal Not used (open)
128
ROM-CS
O
Chip enable signal output to the program ROM (IC508)
129
PIO2
I/O
Programmable I/O terminal Not used (open)
130
NC
O
Not used (open)
131, 132
VDD
—
Power supply terminal (+3.3V)
133
PIO3
I/O
Programmable I/O terminal Not used (open)
134, 135
VDD
—
Power supply terminal (+3.3V)
136
VSS
—
Ground terminal
137
VDD
—
Power supply terminal (+3.3V)
138
PIO4
I/O
Programmable I/O terminal Not used (open)
139, 140
VDD
—
Power supply terminal (+3.3V)
141
PIO5
I/O
Programmable I/O terminal Not used (open)
142, 143
VD0, VD1
O
Video data bus output to the digital RGB encoder (IC514)
144
VDD
—
Power supply terminal (+3.3V)
145
VD2
O
Video data bus output to the digital RGB encoder (IC514)
146
VSS
—
Ground terminal
147
PIO6
I/O
Programmable I/O terminal Not used (open)
148
VD3
O
Video data bus output to the digital RGB encoder (IC514)
149
VDD
—
Power supply terminal (+3.3V)
150
VD4
O
Video data bus output to the digital RGB encoder (IC514)
151
VSS
—
Ground terminal
152
VD5
O
Video data bus output to the digital RGB encoder (IC514)
153
PIO7
I/O
Programmable I/O terminal Not used (open)
154, 155
VD6, VD7
O
Video data bus output to the digital RGB encoder (IC514)
156
PIO8
I/O
Programmable I/O terminal Not used (open)
157
HSYNC
O
Horizontal synchronized signal output to the BU2990 (IC511) and digital RGB encoder (IC514)
158
VSYNC
O
Vertical synchronized signal output to the BU2990 (IC511) and digital RGB encoder (IC514)
159
RESERVED
O
Not used (open)
160
VDD
—
Power supply terminal (+3.3V)
161
DA-DATA
O
Digital audio data output to the D/A converter (IC509)
162
VSS
—
Ground terminal
163 to 165
RESERVED
O
Not used (open)
166
DA-LRCK
O
Digital audio L/R sampling clock signal (44.1 kHz) output to the D/A converter (IC509)
167
DA-BCK
O
Digital audio bit clock signal (2.8224 MHz) output to the D/A converter (IC509)
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