Sharp DX-SX1H Service Manual page 54

DX-SX1H
IC606 RH-iX1473GEZZ: Digital Servo (IX1473GE) (2/3)
Terminal
Pin No.
Input/Output
Name
44 TRO Output
45 VREF
46* RFGC Output
47 TEBC Output
48 FMO Output
49* FVO Output
50 DMO Output
51 2VREF
52 SEL Output
53 FLGA Output
54 FLGB Output
55* FLGC Output
56 FLGD Output
57 VDD
58 VSS
59-62 IO0-IO3 Input/Output
(60*)
63 /DMOUT Input
64 /CKSE
65* /DACT
66 TESIN Input
67 TESIO1 Input/Output
68 VSS
69 PXI Input
70 PXO Output
71 VDD
72 XVSS
73 XI Input
74* XO Output
75 XVDD
76 DVDD
77* RO Output
78 DVSS
79 DVR
80* LO Output
81 DVDD
82 TEST1 Input
83 TEST2 Input
84 TEST3 Input
85 BUS0 Input/Output
86 BUS1 Input/Output
87 BUS2 Input/Output
88 BUS3 Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Tracking equalizer output terminal
— Analog reference power terminal
Outputs 3-pole PWM signal of RF amplitude adjusting signal output terminal.
(PWM carrier = 88.2 kHz)
Outputs 3-pole PWM signal of tracking balance control signal output terminal.
(PWM carrier = 88.2 kHz)
Outputs 3-pole PWM signal of feed equalizer output terminal.
(PWM carrier = 88.2 kHz)
Outputs speed error signal or 3-pole PWM signal of feed search EQ output terminal.
(PWM carrier = 88.2 kHz)
To output PWM signals of 3 poles of disc equalizer output terminal.
(PWM carrier = DPS 88.2 kHz, synchronizing with PXO)
— Reference power terminal
Laser diode control signal
FLG-A output terminal
FLG-B output terminal
FLG-C output terminal
FLG-D output terminal
— Power terminal
— Connected to GND.
General-purpose I/O port
Can be switched to input/output port possible according to commands.
In case of input port: can read terminal condition (H/L) by read commands possible.
In case of output port: can control terminal condition (H/L/HiZ) by commands possible.
Terminal for setting the mode outputting feed equalizer binary PWM from IO0 and 1
terminals and disc equalizer binary PWM from IO2 and 3 terminals. "L": active.
— X'tal select terminal. In case of 16.9344MHz: "H"; in case of 33.8688 MHz: "L"
— Test terminal
Test input terminal
Test input/output terminal
— Digital ground terminal
DSP system clock oscillation circuit input terminal
DSP system clock oscillation circuit output terminal
— Digital + power terminal
— Ground terminal for system clock oscillation circuit
System clock oscillation circuit input terminal
System clock oscillation circuit output terminal
— + power terminal for system clock oscillation circuit
— D/A conversion section power terminal
Channel R data normal rotation output terminal
— D/A conversion section analog ground terminal
— D/A conversion section reference voltage terminal
Channel L data normal rotation output terminal
— D/A conversion section power terminal
Test terminal
Normally open
Test terminal
Normally open
Test terminal
Normally open
Data input/output terminal for microcomputer interface
Function
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Remarks
Pull-up
resistor built in
Pull-up
resistor built in
Pull-up
resistor built in
Schmitt input
CMOS port