Sony MZ-R909 Service Manual page 52

MZ-R909
Pin No.
Pin Name
158 EVA
159 OPR LED
160 SSB DATA
161 SSB CLK
162 MCUVSS0
163 VREC PWM
164 VL PWM
165 VC PWM
SPDL AUX
166
PWM
167, 168 NC
169 CLK SEL
OPEN CLOSE
170
SW
171 NC
172 SET CODE0
173 SET CODE1
174, 175 SET CODE2, 3
176 MIFVDD1
177 MIFVSS1
178 AOUT SEL
179 SI0
180 SO0
181 SCK0
182 XGUM ON
183 BEEP
184 NC
185 VD SEL
186 XMUTE
187 LCD RST AUX
188 PAUSE KEY
189 MIC SENSE
190 XPATCH
191 OPT DET
192 XJACK DET
193 XMIC DET
194, 195 PD S0, PD S1
196 MIFVDD2
52
I/O
I EVA/FLASH chip discrimination terminal "L": FLASH chip, "H": EVA chip
—
Not used (open)
I/O Input/output of SSB data with RF amp (IC501)
O SSB clock output to RF amp (IC501)
—
Ground terminal (for the microcomputer block)
O Over write head control spare terminal Not used (open)
O PWM signal output for the laser power supply voltage control to the power control (IC901)
O PWM signal output for the system power supply voltage control to the power control (IC901)
O PWM signal output for the spindle support to the motor driver (IC551)
O Not used (open)
O System clock select signal output to the power control (IC901)
Open/close detection switch (S806) of the upper panel input terminal
I
"L": when upper panel close
O Not used (open)
I Input terminal for the set (fixed at "L" in this set)
I Input terminal for the set (open in this set)
I Input terminal for the set (fixed at "L" in this set)
—
Power supply terminal (for the microcomputer I/F block) (+2.3V)
—
Ground terminal (for the microcomputer I/F block)
O HP/LINE changeover signal output to the headphone amp (IC302)
Serial data input from the nonvolatile memory (IC804) and liquid crystal display element
I
module
Serial data output to the nonvolatile memory (IC804), A/D converter (IC301) and
O
liquid crystal display element module
Serial clock signal output to the nonvolatile memory (IC804), A/D converter (IC301)
O
and liquid crystal display element module
I Rechargeable battery detection switch (S804) input terminal "L": there is rechargeable battery
O Beep sound control signal output to the headphone amp (IC302)
O Not used (open)
O VD power supply changeover signal output terminal Not used (open)
Analog muting control signal output terminal to the headphone amp (IC302)
O
"L": muting ON
O Reset control signal output terminal to the liquid crystal display element "L": reset
I Pause key input terminal from the switch & LCD module
Mic sense control signal output to the mic amp (IC303) "L": Low sensitivity "H": High
O
sensitivity
I Patch function detection input terminal "L": patch function Not used (open)
I DIN plug detection signal input terminal
I LINE IN plug detection signal input terminal
I Microphone plug detection signal input terminal
O PD IC mode changeover signal output to the optical pick up
—
Power supply terminal (for the microcomputer I/F block) (+2.3V)
Description