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

O

Reset control signal output to the motor driver (IC551)

 

 

DRV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

NC

I

Not used (open)

 

 

 

 

226

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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)

 

 

 

 

 

 

 

 

 

 

 

 

38

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Image 40
Sony MZ-R900 Xpd Ada, Xcs Lcd, Lcd Stb, Lcd Rst, Rec Led, LD on, Tsb Slv Chk, MCUVSS1, Cav Clv Sw, Cs Rtc, Xcs Nv, Drv