Yamaha PSR-S750 Service Manual page 24

PSR-S750/PSR-S950
PIN OUTER
NAME
NO. NO.
151 H21 VCCQ
152 H22 PTM7/LCDD7
153 H23 PTM5/LCDD5
154 H24 PTM4/LCDD4
155 H25 PTM3/LCDD3
156 J1 PTY1/KEYOUT1
157 J2 PTY5/KEYOUT5/KEYIN5
158 J3 PTY3/KEYOUT3
159 J4 PTY2/KEYOUT2
160 J5 PTY0/KEYOUT0
161 J21 VCCQ
162 J22 PTL5/LCDD13
163 J23 PTM1/LCDD1
164 J24 PTM2/LCDD2
165 J25 PTM0/LCDD0
166 K1 PTT3
167 K2 PTT2
168 K3 PTT1/DREQ0
169 K4 PTT0
170 K5 PTY4/KEYOUT4/KEYIN6
171 K10 VDD
172 K11 VDD
173 K12 VDD
174 K13 VDD
175 K14 VDD
176 K15 VDD
177 K16 VDD
178 K21 VCCQ
179 K22 HPD63/PTN7
180 K23 HPD48/PTB0
181 K24 HPD62/PTN6
182 K25 HPD61/PTN5
183 L1 PTU3
184 L2 PTU2
185 L3 PTU1
186 L4 PTU0
187 L5 VCCQ
188 L10 VDD
189 L11 VDD
190 L12 VSS
191 L13 VSS
192 L14 VSS
193 L15 VDD
194 L16 VDD
195 L21 VCCQ
196 L22 HPD49/PTB1
197 L23 HPD50/PTB2
198 L24 HPD60/PTN4
199 L25 HPD59/PTN3
200 M1 PTV1
201 M2 PTV0
202 M3 PTU4
203 M4 PTT4
204 M5 VSS
205 M10 VDD
206 M11 VSS
207 M12 VSS
208 M13 VSS
209 M14 VSS
210 M15 VSS
211 M16 VDD
212 M21 VSS
213 M22 HPD51/PTB3
214 M23 HPD58/PTN2
215 M24 HPD52/PTB4
216 M25 HPD53/PTB5
217 N1 PTV2
218 N2 SCL
219 N3 PTV3
220 N4 PTV4
221 N5 VSS
222 N10 VDD
223 N11 VSS
224 N12 VSS
225 N13 VSS
24
I/O FUNCTION
- I/O power supply (3.3V)
I/O Port/LCD data bus
I/O Port/LCD data bus
I/O Port/LCD data bus
I/O Port/LCD data bus
I/O Port/key output
I/O Port/key output/key input
I/O Port/kye output
I/O Port/kye output
I/O Port/kye output
- I/O power supply (3.3V)
I/O Port/LCD data bus
I/O Port/LCD data bus
I/O Port/LCD data bus
I/O Port/LCD data bus
I/O Port
I/O Port
I/O Port/DMA transfer request
I/O Port
I/O Port/key output/key input
- Internal power supply (1.2V)
- Internal power supply (1.2V)
- Internal power supply (1.2V)
- Internal power supply (1.2V)
- Internal power supply (1.2V)
- Internal power supply (1.2V)
- Internal power supply (1.2V)
- I/O power supply (3.3V)
I/O SDRAM upper data bus/port
I/O SDRAM upper data bus/port
I/O SDRAM upper data bus/port
I/O SDRAM upper data bus/port
I/O Port
I/O Port
I/O Port
I/O Port
- I/O power supply (3.3V)
- Internal power supply (1.2V)
- Internal power supply (1.2V)
- Ground
- Ground
- Ground
- Internal power supply (1.2V)
- Internal power supply (1.2V)
- I/O power supply (3.3V)
I/O SDRAM upper data bus/port
I/O SDRAM upper data bus/port
I/O SDRAM upper data bus/port
I/O SDRAM upper data bus/port
I/O Port
I/O Port
I/O Port
I/O Port
- Ground
- Internal power supply (1.2V)
- Ground
- Ground
- Ground
- Ground
- Ground
- Internal power supply (1.2V)
- Ground
I/O SDRAM upper data bus/port
I/O SDRAM upper data bus/port
I/O SDRAM upper data bus/port
I/O SDRAM upper data bus/port
I/O Port
I/O I2C serial clock input/output
I/O Port
I/O Port
- Ground
- Internal power supply (1.2V)
- Ground
- Ground
- Ground
PIN OUTER
NAME I/O
NO. NO.
226 N14 VSS - Ground
227 N15 VSS - Ground
228 N16 VDD - Internal power supply (1.2V)
229 N21 VSS - Ground
230 N22 HPD56/PTN0 I/O SDRAM upper data bus/port
231 N23 HPD55/PTB7 I/O SDRAM upper data bus/port
232 N24 HPD54/PTB6 I/O SDRAM upper data bus/port
233 N25 HPD57/PTN1 I/O SDRAM upper data bus/port
234 P1 SDA I/O I2C serial clock input/output
235 P2 PTA1 I/O Port
236 P3 PTA2 I/O Port
237 P4 PTA0/LCDLCLK I/O Port/LCD clock source input
238 P5 VSS - Ground
239 P10 VDD - Internal power supply (1.2V)
240 P11 VSS - Ground
241 P12 VSS - Ground
242 P13 VSS - Ground
243 P14 VSS - Ground
244 P15 VSS - Ground
245 P16 VDD - Internal power supply (1.2V)
246 P21 VSS - Ground
247 P22 HPD31 I/O SDRAM lower data bus
248 P23 HPD30 I/O SDRAM lower data bus
249 P24 HPD16 I/O SDRAM lower data bus
250 P25 HPCLKR I/O SDRAM interface synchronous clock
251 R1 PTA3 I/O Port
252 R2 PTA4 I/O Port
253 R3 PTA5/SCIF1_TXD I/O Port/SCIF transmit data
254 R4 PTW2/SCIF2_RXD I/O Port/SCIF receive data
255 R5 VCCQ - I/O power supply (3.3V)
256 R10 VDD - Internal power supply (1.2V)
257 R11 VDD - Internal power supply (1.2V)
258 R12 VSS - Ground
259 R13 VSS - Ground
260 R14 VSS - Ground
261 R15 VDD - Internal power supply (1.2V)
262 R16 VDD - Internal power supply (1.2V)
263 R21 VCCQ - I/O power supply (3.3V)
264 R22 HPD19 I/O SDRAM lower data bus
265 R23 HPD18 I/O SDRAM lower data bus
266 R24 HPD29 I/O SDRAM lower data bus
267 R25 HPD17 I/O SDRAM lower data bus
268 T1 PTA6/SCIF1_RXD I/O Port/SCIF receive data
269 T2 PTA7/SCIF1_SCK I/O Port/SCIF serial clock
270 T3 PTW0/SCIF1_RTS I/O Port/SCIF RTS output
271 T4 RDWR O Read/write signal
272 T5 VCCQ - I/O power supply (3.3V)
273 T10 VDD - Internal power supply (1.2V)
274 T11 VDD - Internal power supply (1.2V)
275 T12 VDD - Internal power supply (1.2V)
276 T13 VDD - Internal power supply (1.2V)
277 T14 VDD - Internal power supply (1.2V)
278 T15 VDD - Internal power supply (1.2V)
279 T16 VDD - Internal power supply (1.2V)
280 T21 VCCQ - I/O power supply (3.3V)
281 T22 HPD26 I/O SDRAM lower data bus
282 T23 HPD20 I/O SDRAM lower data bus
283 T24 HPD27 I/O SDRAM lower data bus
284 T25 HPD28 I/O SDRAM lower data bus
285 U1 PTW1/SCIF1_CTS I/O Port/SCIF CTS input
286 U2 PTW3/SCIF2_TXD I/O Port/SCIF transmit data
287 U3 PTW4/SCIF2_SCK I/O Port/SCIF serial clock
288 U4 D3 I/O Data bus
289 U5 VCCQ - I/O power supply (3.3V)
290 U21 VCCQ - I/O power supply (3.3V)
291 U22 HPD24 I/O SDRAM lower data bus
292 U23 HPD22 I/O SDRAM lower data bus
293 U24 HPD25 I/O SDRAM lower data bus
294 U25 HPD21 I/O SDRAM lower data bus
295 V1 PTW5/SCIF2_RTS I/O Port/SCIF RTS output
296 V2 PTW6/SCIF2_CTS I/O Port/SCIF CTS input
297 V3 CB5B/CE1A O Chip select/PCMCIA card select
298 V4 CS4 O Chip select
299 V5 VCCQ - I/O power supply (3.3V)
300 V21 VCCQ - I/O power supply (3.3V)
FUNCTION