Onkyo DV-SP303 Service Manual page 47

IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
No. Pin Name I/O
91 AD7 I
92 A17 O
93 IOA0 I/O
94 DVSS –
95 UWR# I
96 URD# I
97 DVDD18 –
98 UP1_2 I/O
99 UP1_3 I/O
100 UP1_4 I/O
101 UP1_5 I/O
102 UP1_6 I/O
103 UP1_7 I/O
104 UP3_0 I/O
105 UP3_1 I/O
106 UP3_4 I/O
107 UP3_5 I/O
108 DVDD3 –
109 ICE I
110 PRST# I
111 IR I
112 INT0# I/O
113 DQM0 I/O
114 DQS0 I/O
115 RD7 I/O
116 DVSS –
117 RD6 I/O
118 RD5 I/O
119 DVSS –
120 RD4 I/O
121 RD3 I/O
122 DVDD18 –
123 RD2 I/O
124 RD1 I/O
125 RD0 I/O
126 RD15 I/O
127 DVDD3 –
128 RD14 I/O
129 RD13 I/O
130 RD12 I/O
131 RD11 I/O
132 RD10 I/O
133 RD9 I/O
134 DVSS –
135 RD8 I/O
136 DQS1 I/O
Pin Function
Microcontroller address/data 7
Flash address 17
Microcontroller address 0/IO
3.3V Ground pin for internal digital circuitry
Microcontroller write strobe, active low
Microcontroller read strobe, active low
1.8V power pin for internal digital circuitry
Microcontroller port 1-2
Microcontroller port 1-3
Microcontroller port 1-4
Microcontroller port 1-5
Microcontroller port 1-6
2
I C clock pin
Microcontroller port 1-7
2
I C data pin
Microcontroller port 3-0
8032 RS232 RXD
Microcontroller port 3-1
8032 RS232 TXD
Microcontroller port 3-4
Hardwired RD232 RXD
2
I C clock pin
Microcontroller port 3-5
Hardwired RD232 TXD
2
I C data pin
3.3V power pin for internal digital circuitry
Microcontroller ICE mode enable
Power on reset input, active low
IR control signal input
Microcontroller external interrupt 0, active low
Data mask 0
GPIO
DRAM data 7
1.8V Ground pin for internal digital circuitry
DRAM data 6
DRAM data 5
3.3V Ground pin for internal digital circuitry
DRAM data 4
DRAM data 3
1.8V power pin for internal digital circuitry
DRAM data 2
DRAM data 1
DRAM data 0
DRAM data 15
3.3V power pin for internal digital circuitry
DRAM data 14
DRAM data 13
DRAM data 12
DRAM data 11
DRAM data 10
DRAM data 9
3.3V Ground pin for internal digital circuitry
DRAM data 8
GPIO
No. Pin Name I/O
137 DQM1 I/O Data mask 1
138 RWE# O DRAM Write enable, active low
139 CAS# O DRAM column address strobe, active low
140 RAS# O DRAM row address strobe, active low
141 DVDD3 – 3.3V power pin for internal digital circuitry
142 RCS# O DRAM chip select, active low
143 BA0 I/O DRAM bank address 0
144 DVSS – 1.8V Ground pin for internal digital circuitry
145 BA1 I/O DRAM bank address 1
146 RA10 I/O DRAM address 10
147 RA0 I/O DRAM address 0
148 DVSS – 3.3V Ground pin for internal digital circuitry
149 RA1 I/O DRAM address 1
150 RA2 I/O DRAM address 2
151 RA3 I/O DRAM address 3
1.8V power pin for internal digital circuitry
152 DVDD18 –
153 NC – –
154 NC – –
3.3V power pin for internal digital circuitry
155 DVDD3 –
156 RCLK I/O Dram clock
157 CKE O DRAM clock enable
158 RA11 I/O DRAM address bit 11
159 RA9 I/O DRAM address 9
160 RA8 I/O DRAM address 8
3.3V Ground pin for internal digital circuitry
161 DVSS –
162 RA7 I/O DRAM address 7
163 DVSS – 1.8V Ground pin for internal digital circuitry
DRAM address 6
164 RA6 I/O
165 RA5 I/O DRAM address 5
166 RA4 I/O DRAM address 4
167 DVDD3 – 3.3V power pin for internal digital circuitry
GPIO
168 RD31 I/O
169 RD30 I/O GPIO
170 RD29 I/O GPIO
–
171 NC –
172 NC – –
173 DVDD18 – 1.8V power pin for internal digital circuitry
174 RD26 I/O GPIO
–
175 NC –
176 RD25 I/O GPIO
177 RD24 I/O GPIO
178 DQM3 I/O GPIO
179 DQM2 I/O GPIO
180 NC – –
181 NC – –
182 DVDD3 – 3.3V power pin for internal digital circuitry
183 NC – –
184 NC – –
185 NC – –
186 NC – –
187 NC – –
188 NC – –
DV-SP303
Pin Function