Sharp MD-R2 Serivce Manual page 57

IC1401 RX-iX0232AWZZ:MD System Microcomputer (IX0232AW) (2/2)
Terminal Name
Pin No.
52 P42/A18
53 P41/A17
54 P40/A16
55* P37/A15
56* P36/A14
57* P35/A13
58 P34/A12
59 P33/A11
60 P32/A10
61 P31A9
62 Vcc
63* P30/A8
64 Vss
65* P27/A7
66* P26/A6
67* P25/A5
68* P24/A4
69* P23/A3
70 P22/A2
71* P21/A1
72 P20/A0
73 P17/D15
74* P16/D14
75* P15/D13
76 P14/D12
77 P13/D11
78* P12/D10
79* P11/D9
80 P10/D8
81* P07/D7
82* P06/D6
83* P05/D5
84 P04/D4
85* P03/D3
86 P02/D2
87 P01/D1
88 P00/D0
89 P107/AN7/KI3
90 P106/AN6/KI2
91 P105/AN5/KI1
92 P104/AN4/KI0
93 P103/AN3
94 P102/AN2
95 P101/AN1
96 AVss
97 P100/AN0
98 V
REF
99 AVcc
100 P97/AD
TRG
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Input/Output
In/Output SYS D2 (data bus 2)
In/Output SYS D1 (data bus 1)
In/Output SYS D0 (data bus 0)
Output Not used
Output Not used
Output Not used
Output EEPRO (EEPROM protection cancel)
Output EPCS (EEPROM chip selector output)
In/Output EEPD (EEPROM sirial data output)
Output EEPK (EEPROM sirial colck output)
Input + 3.15V
Output Not used
— GND
Output L3 DATA (soft serial communication, 2 modes provided, LSB fast)
Output L3 MODE (soft serial communication, 2 modes provided, LSB fast)
Output L3 CLK (soft serial communication, 2 modes provided, LSB fast)
Output Not used
Output Not used
Output PCNT0 output
Output Not used
Output LDON output (H: ON)
Output ANLPTR output
Output ADPON output (for CK)
Output DAPON output (for CK)
Output DFS0 output
Output DFS1 output
Output DIG EX output (for CK)
Output DIG CD output (for CK)
Output XRST (system reset output)
Output AD MUTE output (for CK)
Output EMPHA output (for CK)
Output DA MUTE output (for CK)
Output MUTE output
Output DOUTM output (for CK)
Input TEST2 (special mode selection 2)
Input TEST1 (special mode selection 1)
Input TEST0 (special mode selection 0)
Input AVCK3 (special mode monitor input)
Input AVCK2 (AD/DA section 3.1V monitor input)
Input AVCK1 (DOUT section 5V monitor input)
Input DTEMP (temperature detection input)
Input MINF (disc type/REC input)
Input TEST K1 (test key input 1)
Input TEST K2 (test key input 2)
— GND
Input HINF (mechanism position/HEAD position)
— + 3.15V
— + 3.15V
Input Connect +B
Function
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MD-R2