Sony Walkman MZ-R900 Servicehandleiding - Pagina 38

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Sony Walkman MZ-R900 Servicehandleiding
MZ-R900
Pin No.
Pin Name
91
DSPVDD2
92
DSPVSS1
93
SPCU
94
SPCV
95
SPCW
96
SRDR
97
SFDR
98
SLDV
99
SLDW
100
SLCU
101
SLCV
102
SLCW
103
DIFVDD1
104
DIFVSS1
105
EFMO
106
MNT0
107
MNT1
108
MNT2
109
MNT3
110
SENSE
111
TX
112
RECP
113
DSPVDD3
114 to
NC
117
118
DRAMVSS0
119
DRAMVDD0
120 to
NC
138
139
DRAMVDD1
140
DRAMVSS1
141
TSB MST VDD
142
RMC DTCK
143
TSB SLV VDD
144
TSB SLVI
145
TSB SLVO
146
TDI
147
TMS
148
TCK
149
XTRST
150
TDO
151
JTAGVDD
152
JTAGVSS
153
MCUVDD2
154
MIFVDD0
155
MIFVSS0
36
I/O
—
Power supply terminal (for DSP block) (+1.5V)
—
Ground terminal (for DSP block)
I
Spindle motor drive comparison signal input (U) from the motor driver (IC551)
I
Spindle motor drive comparison signal input (V) from the motor driver (IC551)
I
Spindle motor drive comparison signal input (W) from the motor driver (IC551)
O
Sled servo drive PWM signal output (–) to the motor driver (IC551)
O
Sled servo drive PWM signal output (+) to the motor driver (IC551)
Sled motor drive signal output (V) to the motor driver (IC551)/ drive control signal
O
output (1–)
Sled motor drive signal output (W) to the motor driver (IC551)/ drive control signal
O
output (2+)
I
Spindle motor drive comparison signal input (U) from the motor driver (IC551)
I
Spindle motor drive comparison signal input (V) from the motor driver (IC551)
I
Spindle motor drive comparison signal input (W) from the motor driver (IC551)
—
Power supply terminal (for DSP I/F) (+2.3V)
—
Ground terminal (for DSP I/F)
O
EFM encode data output for the record to the over write head drive (IC601)
O
Internal DSP monitor output (0) terminal Not used (open)
O
Internal DSP monitor output (1) terminal Not used (open)
O
Internal DSP monitor output (2) terminal Not used (open)
O
Internal DSP monitor output (3) terminal Not used (open)
O
Internal DSP (SENS) monitor output terminal Not used (open)
Record data output enable signal output monitor terminal of the internal DSP
O
Not used (open)
O
Laser power changeover signal output monitor terminal Not used (open)
—
Power supply terminal (for DSP block) (+1.5V)
O
Output terminal for the external D-RAM Not used (open)
—
Ground terminal (for the external D-RAM)
—
Power supply terminal (for the external D-RAM) (+2.4V)
O
Output terminal for the external D-RAM Not used (open)
—
Power supply terminal (for the external D-RAM) (+2.4V)
—
Ground terminal (for the external D-RAM)
—
Power supply terminal (for TSB master communication) (+2.8V)
I/O
TSB serial data input/output with the remote commander attached headphone
—
Power supply terminal (for I/F to TSB slave communication) (+2.3V)
I
TSB slave signal input from the remote commander attached headphone
O
TSB slave signal output from the remote commander attached headphone
I
Data input terminal for JTAG Not used (open)
I
Test mode control input terminal for JTAG Not used (open)
I
Clock input terminal for JTAG Not used (open)
I
Reset input terminal for JTAG Not used (open)
O
Data output terminal for JTAG Not used (open)
—
Power supply terminal (for JTAG) (+2.4V)
—
Ground terminal (for JTAG)
—
Power supply terminal (for the microcomputer block) (+1.5V)
—
Power supply terminal (for the microcomputer I/F block) (+2.3V)
—
Ground terminal (for the microcomputer I/F block)
Description