MZ-R900
Pin No. | Pin Name | I/O |
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156, 157 | TEST1, TEST0 | I | Input terminal for the main test (normally fixed at “L”) |
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158 | EVA | I | EVA/FLASH chip discrimination terminal “L”: FLASH chip, “H”: EVA chip | |||
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159 | NC | O | Not used (open) |
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160 | SSB DATA | I/O | Input/output of SSB serial data with RF amp (IC501) |
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161 | SSB CLK | O | SSB serial clock output to RF amp (IC501) |
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162 | MCUVSS0 | — | Ground terminal (for the microcomputer block) |
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163 | VREC PWM | O | Over write head control spare terminal | Not used (open) |
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164 | VL PWM | I | PWM for the laser automatic power supply voltage control signal output to the power control | |||
(IC901) |
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165 | VC PWM | I | PWM signal output for the system power supply voltage control to the power control (IC901) | |||
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166 | SPDL AUX | O | PWM signal output for the spindle support to the motor driver (IC551) | |||
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167, 168 | NC | O | Not used (open) |
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169 | CLK SEL | O | System clock select signal output to the power control (IC901) |
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170 | OPEN CLOSE | I | Open/close detection switch (S806) of the upper panel input terminal (A/D input) | |||
SW | “L”: when upper panel close |
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171 | GND SW | O | Control signal output to the ground (GND) changeover switch |
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172 | SET CODE0 | O | Input terminal for the set (fixed at “L” except for US/Canadian) | |||
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173 | SET CODE1 | O | Input terminal for the set (open in this set) |
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174, 175 | SET CODE2, 3 | O | Input terminal for the set (fixed at “L” in this set) |
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176 | MIFVDD1 | — | Power supply terminal (for the microcomputer I/F block) (+2.3V) | |||
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177 | MIFVSS1 | — | Ground terminal (for the microcomputer I/F block) |
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178 | AOUT SEL | O | HP/LINE changeover signal output to the headphone amp (IC302) | |||
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179 | SI0 | I | Serial data input from the nonvolatile memory (IC804) and liquid crystal display element | |||
module |
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180 | SO0 | O | Serial data output to the nonvolatile memory (IC804), A/D, D/A converter (IC301) and | |||
liquid crystal display element module |
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181 | SCK0 | O | Serial clock signal output to the nonvolatile memory (IC804), A/D, D/A converter (IC301) | |||
and liquid crystal display element module |
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182 | XGUM ON | I | Battery pack detection switch (S804) input terminal for the charge “L”: there is battery pack | |||
for the charge |
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183 | BEEP | O | Beep sound control signal output to the headphone amp (IC302) | |||
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184 | NC | O | Not used (open) |
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185 | VD SEL | O | VD power supply changeover signal output terminal Not used (open) | |||
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186 | XMUTE | O | Analog muting control signal output terminal to the headphone amp (IC302) | |||
“L”: muting ON |
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187 | LCD RST AUX | O | Reset control signal output terminal to the liquid crystal display element “L”: reset | |||
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188, 189 | NC | O | Not used (open) |
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190 | XPATCH | I | Patch function detection input terminal | “L”: patch function | Not used (open) | |
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191 | OPT DET | I | DIN plug detection signal input terminal |
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192 | XJACK DET | I | LINE IN plug detection signal input terminal |
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193 | XMIC DET | I | Microphone plug detection signal input terminal |
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194, 195 | PD S0, PD S1 | O | PD IC mode changeover signal output to the optical pick up |
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196 | MIFVDD2 | — | Power supply terminal (for the microcomputer I/F block) (+2.3V) | |||
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197 to | MODE1 to 3 | O | Power supply control signal output (for the over write head drive) to the over write head | |||
199 | drive (IC601) |
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200, 201 | HD CON 1, 2 | O | Over write head control signal output to the over write head drive (IC601) | |||
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202 | REC WBL SW | O | LPF changeover switch input terminal when REC/PB control | Not used (open) | ||
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203 | XCS ADA | O | Chip select signal output to A/D, D/A converter (IC301) |
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