Sharp MD-MT877S Service Manual page 42

MD-MT877/MD-MT877C
IC401 RH-iX0419AWZZ :System Microcomputer (IX0419AW) (2/2)
Port Name Terminal Name Input/Output
Pin No.
58 OSC1 OSC1
59 RES _RESET
60 NMI DCIN
61 STBY _STBY
62 VCC VCC
63 XTAL XTAL
64 Vss VSS
65 EXTAL EXTAL
66 FWE FWE
67 MD2 MD2
68 PF7 _EJSW
69 PF6 SLCNT3
70 PF5 SLCNT2
71 PF4 SLCNT1
72 PF3/ADTRG _RPLAY
73 PF2 SENSE
74 PF1 _FOK
75 FP0/IRQ2 _DCEXT
76 TxD0 RMDAT
77 RxD0 PCLDI
78* SCK0 SCK0
79 P33 _ELON
80 P34 LEDCTB
81 P35 _STOP
82 P36 LEDCTR
83 P77 DCNT
84 P76 BATON
85 P75 LDON
86 P74 PBLAT
87 P73 PCNT3
88 P72 DCON
89 P71 PCNT2
90 P70 EMPH0
91 PG0/IRQ6 _PLAY
92 PG1/IRQ7 _REC
93 PG2 _XRST
94 PG3 CKSTP
95 PG4 LEDCTG
96 PE0 _EPCS
97 PE1 EEPD
98 PE2 EEPK
99 PE3 EPRT
100 PE4 PCNT1
In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside.
— Sub clock.
Input Microcomputer hard reset input.
Input DC IN edge detection.
Input Microcomputer standby input (not used).
Input Positive power supply.
— Crystal connection terminal.
— Ground potential.
— Crystal connection terminal.
Input Flash write enable.
Input Operation mode selection input 2.
Input Ejection lever operation detection input.
Output Stepping control 3.
Output Stepping control 2.
Output Stepping control 1.
Input Remote control PLAY button operation detection input.
Input System LSI servo sense input.
Input Focus OK signal input.
Input DC-IN detection (level).
Output Remote control indication data/PC link data output.
Input PC link data input.
Output Serial I/O clock output (not used).
Output EL lighting control output L.
Output LED lighting control (Blue).
Input Unit stop button control detection input.
Output LED lighting control (Orange).
Output Mechanism driver enable output.
Output Battery power supply line ON/OFF.
Output P.C. laser ON/OFF control output.
Output Audio PC data clock output.
Output _DC IN input control output.
Output DC power supply line ON/OFF.
Output START Tr ON/OFF.
Output Audio output emphasis control 0.
Input Unit PLAY button operation detection input.
Input Unit REC button operation detection.
Output System LSI hard reset output.
Output Microcomputer standby operation monitor.
Output LED lighting control (Yellow-green).
Output EEPROM chip selection output.
Input/Output EEPROM serial data input/output.
Output EEPROM serial clock output.
Output EEPROM write protection control output.
Output System power supply ON/OFF control output.
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Function