35
MZ-R900
Pin No.
Pin Name
I/O
Description
47
FE
I
Focus error signal input from RF amp (IC501)
48
AUX1
I
Support signal (I
3
signal/temperature signal) input terminal (A/D input)
49
VC
I
Middle point voltage (+1.2V) input terminal
50
ADIO
O
Monitor output of A/D converter input signal Not used (open)
51
ADRT
I
A/D converter the upper limit voltage input (fixed at “H” in this set)
52
AVD2
—
Power supply terminal (for the analog) (+2.4V)
53
AVS2
—
Ground terminal (for the analog)
54
ADRB
I
A/D converter the lower limit voltage input (fixed at “L” in this set)
55
SE
I
Sled error signal input terminal Not used ( fixed at “L”)
56
TE
I
Tracking error signal input from RF amp (IC501)
57
DCHG
—
Connecting analog power supply of the low impedance (fixed at “H” in this set)
58
APC
I
Error signal input for the laser automatic power control Not used (fixed at “H”)
59
DSPVDD0
—
Power supply terminal (for DSP block) (+1.5V)
60
DSPVSS0
—
Ground terminal (for DSP block)
61
XTSL
I
Input terminal for the frequency set up of the system clock “L”: 45.1584MHz,
“H”: 22.5792MHz (fixed at “L” in this set)
62
DIN1
I
Input terminal of the record system digital audio signal
63
DOUT
O
Output terminal of the playback system digital audio signal Not used (open)
64
DAPWMLP
O
D/A converter PWM output (L-CH right phase) Not used (open)
65
DAPWMLN
O
D/A converter PWM output (L-CH reverse phase) Not used (open)
66
DAPWMRP
O
D/A converter PWM output (R-CH right phase) Not used (open)
67
DADT
O
Audio data output to the external A/D, D/A converter (IC301)
68
ADDT
I
Data signal input from the external A/D, D/A converter (IC301)
69
LRCK
O
L/R sampling block signal (44.1KHz) output to the external A/D, D/A converter (IC301)
70
XBCK
O
Bit clock signal (2.8224MHz) output to the external A/D, D/A converter (IC301)
71
FS256
O
11.2896MHz clock signal output to the external A/D, D/A converter (IC301)
72
MVCI
I
Vibrate input for the digital in PLL from the external VCO Not used (fixed at “L”)
73
DSPVDD1
—
Power supply terminal (for DSP block) (+1.5V)
74
ADFG
I
ADIP duplex FM signal (20.05
±
1KHz) input from RF amp (IC501)
75
F0CNT
O
Filter cut off control signal output Not used
76
DIFVDD0
—
Power supply terminal (for DSP I/F) (+2.3V)
77
DIFVSS0
—
Ground terminal (for DSP I/F)
78
APCREF
O
Control signal output to the reference voltage generation circuit for the laser automatic power
control
79
LDDR
O
PWM signal output for the laser automatic power control Not used (open)
80
TRDR
O
Tracking servo drive PWM signal output (–) to the motor driver (IC551)
81
TFDR
O
Tracking servo drive PWM signal output (+) to the motor driver (IC551)
82
FFDR
O
Focus servo drive PWM signal output (+) to the motor driver (IC551)
83
FRDR
O
Focus servo drive PWM signal output (–) to the motor driver (IC551)
84
MCUVDD1
—
Power supply terminal (for the microcomputer block) (+1.5V)
85
FGIN
I
FG signal input terminal for the spindle servo Not used (open)
86
FS4
O
176.4MHz clock signal output to the power control (IC601, IC901)
87
SPRD/SPDU/
RTG0
O
Spindle servo drive PWM signal output terminal (–) to the motor driver (IC551)
88
SPFD/SPVS/
PWM3
O
Spindle servo drive PWM signal output (+)
89
SPDV/RTG1
O
Spindle motor drive control signal output (V)/RTG output 1 to the motor driver (IC551)
90
SPDW/RTG2
O
Spindle motor drive control signal output (W)/RTG output 2 to the motor driver (IC551)
Summary of Contents for Walkman MZ-R900
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