Sharp MD-MT270HS/BK Service Manual page 42

MD-MT270H
IC401 RH-iX0561AWZZ :System Microcomputer (IX0561AW) (2/2)
Port Name Terminal Name Input/Output
Pin No.
51 P4_1 SLCNT3
52 P4_0 DISCPR
53 P3_7 PBLAT
54* P3_6 RFPCNT
55 P3_5 RADAT
56 P3_4 CHGFIM
57 P3_3 _FOK
58 P3_2 CKSTP
59 P3_1 DCNT1
60 VCC VCC
61 P3_0 _EJSW
62 VSS VSS
63* P2_7 CHGCNT
64* P2_6 MSENSE
65* P2_5 MCNT
66 P2_4 DCNT2
67 P2_3 PCNT3
68* P2_2 PF4
69 P2_1 LDON
70 P2_0 PCNT2
71 INT5 ARQD
72 INT4 _STOP
73 INT3 _DCEXT
74 P1_4 _XRST
75 P1_3 PCNT1
76 P1_2 SYRS
77 P1_1 _SYRD
78 P1_0 _SYWR
79 P0_7 SYD7
80 P0_6 SYD6
81 P0_5 SYD5
82 P0_4 SYD4
83 P0_3 SYD3
84 P0_2 SYD2
85 P0_1 SYD1
86 P0_0 SYD0
87* P10_7/AN7
88* P10_6/AN6
89 P10_5/AN5 PLVBAT
90 P10_4/AN4 PLVDCI
91 P10_3/AN3 RKEY
92 P10_2/AN2 HKEY1
93 P10_1/AN1 TEMP
94 AVSS AVSS
95* P10_0/AN0
96 VREF VREF
97 AVCC AVCC
98 P9_7 _EPCS
99 P9_6 EEPD
100 P9_5 EEPK
In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside.
Output Stepping control 3
Input Disc record inhibition switch input
Output Audio IC data latch output
Output RF control
Output Audio IC serial data output
Input Charging function existance/nonexistance discrimination input
Input/Output Focus OK signal input
Output Microcomputer standby operation monitor output
Output Mechanism driver enable output
— Positive power supply
Output Ejection lever operation detection input
— Ground potential
Output Charging current control output
Output Microphone sensitivity switching
Output Microphone power control
Output MO raising-lowerng P control
Output
Output Reserve
Output P.U. laser ON/OFF control output.
Output Servo DC-DC converter ON/OFF control
Input Disk cap opens and closes detection/it is started and required
Input Unit STOP button operation detection input
Input DC-IN detection
Output System LSI hard reset output
Output Main DC-DC converter ON/OFF control
Output System LSI register selection output
Output System LSI read enable output
Output System LSI write enable output
Input/Output System LSI parallel data bus
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Output Reserve
Output Reserve
Input Battery voltage detection input
Input DC-DC converter unusual voltage detection
Input Remote control key operation detection input
Input Unit key operation detection input 1
Input Ambient temperature detection input
— A/D and D/A converter ground potential
Output Reserve
— A/D and D/A converter reference voltage
— A/D and D/A converter positive power supply
Output EEPROM chip selection output
Input/Output EEPROM serial data input/output
Output EEPROM serial clock output
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Function