Sharp MD-DR470H, Руководство по обслуживанию

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MD-DR470H/MD-DR480H
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Pin No. Function Terminal Name Input/Output
In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside.
IC201 VHi-1 : Endec/Servo/Atrac (LR37820) (3/3)
104 DGND — Digital GND.
105* SBCK Schmidt Input/ DIN subcode read clock. Expansion port 3.
Three-state Output
106 SBO Output DIN subcode serial data. Expansion port 2.
107* SBSY Output DIN subcode block sync signal. Expansion port 0.
108 SFSY Output DIN subcode frame sync signal. Expansion port 1.
109 VDD5 Input Power supply for interface.
110 FOK Output Focus OK detection signal.
111 SENSE Output Servo status detection signal.
112 COUT Output Track cross signal output.
113 MCCK Output Clock output for microcomputer.
114 DINTX Output Terminal of interrupt request output to system control interface.
115 VDD1 Input Power supply for interface.
116 DGND — Digital GND.
117 RSTX Schmidt Input Chip reset input. L: reset. (Note)
118 SYD0 Schmidt Input/ Data bus terminal of system control interface. (LSB)
Three-state Output
119-124 SYD1-SYD6 Schmidt Input/ Data bus terminal of system control interface.
Three-state Output
125 SYD7 Schmidt Input/ Data bus terminal of system control interface. (MSB)
Three-state Output
126 SYWRX Schmidt Input Register write pulse input of system control interface.
127 SYRDX Schmidt Input Register read pulse input of system control interface.
128 SYRS Schmidt Input Register selection input of system control interface.
List of TEST port settings
TEST1 TEST0 Details
H H Normal mode
H L No adjustment mode
L H Test mode
L L (Settings prohibited)
List of LDCNT port settings
LDCNT1 LDCNT0 Details
H H Brake
H L Drive UP
L H Drive DOWN
L L Output OFF