Sharp MD-MT180 Service Manual page 49

IC401 RH-iX0484AWZZ :System Microcomputer (IX0484AW) (2/2) Main PWB Version B,C,X
IC401 RH-iX0529AWZZ :System Microcomputer (IX0529AW) (2/2) Main PWB Version D
Pin No. Port Name Terminal Name Input/Output
58 MD1 MD1
59 P23 DCEXT
60* WDT0VF WDT0VF
61 MD2 MD2
62 RES _RESET
63 NMI NMI
64 STBY _STBY
65 VCC VCC
66 XTAL XTAL
67 EXTAL EXTAL
68 VSS VSS
69 PF7 _PLAY
70 PF6 _REC
71 PF5 _STOP
72* PF4 PF4
73 IRQ3 _DINT
74 IRQ2 ARQD
75 IRQ1 _RPLAY
76 IRQ0 _ARQK
77 AVCC AVCC
78 VREF VREF
79 AN0 PLVBAT
80 AN1 CHIMON
81 AN2 TEMP
82 AN3 RKEY
83 AN4 HKEY1
84 AN5 HKEY2
85 P46/AN6/DA0 CHGCNT
86 DA1 LDVAR
87 AVSS AVSS
88 VSS VSS
89 P24 CHGON
90* TIOCB4 MCMON
91 P26 PLVON
92 P27 DCNT1
93 PG0 SENSE
94 PG1 _FOK
95 PG2 _XRST
96* PG3 CKSTP
97 PG4 _EJSW
98 VCC VCC
99 P10 PCNT2
100 P11 PCNT1
In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside.
Input Operation mode selection input 1
Input/Output DC-IN detection (level)
Output Watch dog timer (not used)
Input Operation mode selection input 2
Input Microcomputer hard reset input
Input Nonmaskable interruption input (not used)
Input Microcomputer standby input (not used)
— Positive power supply
— Crystal connection terminal
— Crystal connection terminal
— Ground potential
Input Unit PLAY button operation detection input
Input Unit REC button operation detection input
Input Unit STOP button operation detection input
Output Reserve
Input System LSI interruption
Input Disk cap opens and closes detection/it is started and required
Input Remote control PLAY key operation detection input
Input Start request by the key /DC-IN input
— A/D and D/A converter positive power supply
— A/D and D/A converter reference voltage
Input Battery voltage detection input
Input D/C - D/C converter unusual voltage detection
Input Ambient temperature detection input
Input Remote control key operation detection input
Input Unit key operation detection input 1
Input Unit key operation detection input 2
Output Charging current control output
Output P.U. laser power setting output
— A/D and D/A converter ground potential
— Ground potential
Output Battery charge ON/OFF control output
Output Internal operation status monitor
Output Battery power supply line ON/OFF
Output Mechanism driver enable output
Input/Output System LSI servo sense input
Input/Output Focus OK signal input
Output System LSI hard reset output
Output Microcomputer standby operation monitor output
Input/Output Ejection lever operation detection input
— Positive power supply
Output Servo DC-DC converter ON/OFF control
Output Main DC-DC converter ON/OFF control
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MD-MT180
Function