Samsung SF-830, Руководство по обслуживанию

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3-9
Samsung Electronics
CIRCUIT DESCRIPTION
Repair Manual
No Pin Name I/O Reset Value Description PAD
181 DRAMA4 O L DRAM Address Bus 4 PHOB8, 8 mA
182 Vsso Vss - 5 V Gnd
183 DRAMA5 O " DRAM Address Bus 5 "
184 DRAMA6 O " DRAM Address Bus 6 "
185 DRAMA7 O " DRAM Address Bus 7 "
186 Vddo Vdd - 5 V
187 DRAMA8 O L DRAM Address Bus 8 PHOB8, 8 mA
188 Vsso Vss - 5 V Gnd
189 DRAMA9 O L DRAM Address Bus 9 PHOB8, 8 mA
190 DRAMA10 O " DRAM Address Bus 10 "
191 DRAMA11 O " DRAM Address Bus 11 "
192 Vssi Vss - 3.3 V Gnd
193 nROMCS0 O H ROM Chip Select 0 PHOB4, 4 mA
194 Vddi Vdd - 3.3 V
195 nROMCS1 O H ROM Chip Select 1 PHOB4, 4 mA
196 nROMCS2 O " ROM Chip Select 2 "
197 nROMCS3 O " ROM Chip Select 3 "
198 nROMRD O " ROM or IO Read PHOB8, 8 mA
199 Vssp Vss - 5 V Gnd
200 nROMWR O H ROM or IO Write PHOB8, 8 mA
201 Vddp Vdd - 5 V
202 ADDR2 O L Address Bus 2 for ROM PHOB8, 8 mA
203 ADDR3 O " Address Bus 3 for ROM "
204 ADDR4 O " Address Bus 4 for ROM "
205 Vsso Vss - 5 V Gnd
206 ADDR5 O L Address Bus 5 for ROM PHOB8, 8 mA
207 ADDR6 O " Address Bus 6 for ROM "
208 ADDR7 O " Address Bus 7 for ROM "
209 Vssi Vss - 3.3 V Gnd
210 ADDR8 O L Address Bus 8 for ROM PHOB8, 8 mA