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MZ-R900
Pin No.
Pin Name
I/O Description
204 XPD ADA O Power supply control signal output for the drive to A/D, D/A converter (IC301)
205 XCS LCD O Chip select signal output to the liquid crystal display element
206 LCD STB O Strobe signal output to the liquid crystal display element
207 LCD RST O Reset control signal output to the liquid crystal display element Not used (open)
208 REC LED O LED ON/OFF control signal output for REC display
209 LD ON O ON/OFF control signal output terminal of the laser diode Not used (open)
210 TSB SLV CHK I TSB slave detection signal input terminal
211, 212 NC I Not used (open)
213 MCUVSS1
—
Ground terminal (for the microcomputer block)
214 CAV CLV SW O CAV/CLV changeover control signal output Not used (open)
215 XOPT CTL O Power supply ON/OFF control signal output for DIN PD drive
216 CS RTC O Chip select signal output to the clock IC
217 OFTRK I Off track signal input from RF amp (IC501)
218 NC O Analog muting control signal output “H”: muting ON Not used (open)
219 XCS NV O Chip select signal output to EEPROM (IC804)
220
XRST MTR
DRV
O Reset control signal output to the motor driver (IC551)
221 XRF RST O Reset control signal output to RF amp (IC501)
222 MCUVDD3
—
Power supply terminal (for the microcomputer block) (+1.5V)
223 SPDL MON I Spindle servo monitor signal input from the motor driver (IC551)
224 to
226
NC I Not used (open)
227 XHOLD SW I HOLD switch (S801) input terminal “L”: hold ON, “H”: hold OFF
228 SYNC REC I SYNCHRO REC switch (S802) input terminal “L”: OFF, “H”: ON
229 NC O Not used (open)
230 PROTECT I
Detection input terminal of the record check claw from the protect detection switch (S803)
“L”: recording possible condition, “H”: protect
231 FLASHVDD
—
Power supply terminal (for the internal FLASH ROM) (+2.4V)
232 FLASHVSS
—
Ground terminal (for the internal FLASH ROM)
233 SLD MON I Sled servo monitor signal input from the motor driver (IC551)
234 VLON O Power supply control signal output for the laser diode drive to the power control (IC901)
235 SLEEP O System sleep control signal output to the power control (IC901) “H”: sleep ON
236 FFCLR O Input latch output for the start switching to the power control (IC901)
237 CHG GAIN O Charge gain control signal output to the power control (IC601)
238 CHG O Charge ON/OFF control signal output to the power control (IC601) “H”: charge ON
239, 240 NC O Not used (open)
241 MIFVDD3
—
Power supply terminal (for the microcomputer I/F block) (+2.3V)
242 MIFVSS2
—
Ground terminal (for the microcomputer I/F block)
243 TEST2 O Input terminal for the main test (normally open)
244 NC
—
Not used (open)