Sharp MD-C2 Service Manual page 93

IC1401 RX-iX0276AWZZ:MD System Microcomputer (iX0276AW) (2/2)
Terminal Name Input/Output
Pin No.
52 SYS D2
53 SYS D1
54 SYS D0
55 SLOT1
56 SLOT2
57 SLOT3
58 EEPRO
59 EPCS
60 EEPD
61 EEPK
62 Vcc
63 DISC4
64 GND
65 L3 DATA
66 L3 MODE
67 L3 CLK
68 SHIFT+
69 SHIFT-
70 PCNT0
71 DISC5
72 LD ON
73 A/B
74 SBSY
75* DAP ON
76* DFS0
77* DFS1
78 3/5
79 SNG/CNG
80 XRST
81* AD MUTE
82* EMPH
83* DAMUT
84* MUTE
85* DOUTM
86 TEST2
87 TEST1
88 TEST0
89 AVCK3
90 AVCK2
91 ACCK1
92 DTEMP
93 MINF
94 SL POS
95 TEST K2
96 GND
97 HINF
98 V
REF
99 A Vcc
100 SB0
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
In/Output SYS D2 (Data bus 2)
In/Output SYS D1 (Data bus 1)
In/Output SYS D0 (Data bus 0)
Input Input/output port P37. MD changer mechanism slot 1 SW Disc IN: L
Input Input/output port P36. MD changer mechanism slot 2 SW Disc IN: L
Input Input/output port P35. MD changer mechanism slot 3 SW Disc IN: L
Output EEPRO (EEPROM, protect release)
Output EPCS (EEPROM, chip selector output)
In/Output EEPD (EEPROM, serial data output)
Output EEPK (EEPROM, serial clock output)
Input +3.15V
Output Input/output port P30 Not used. Pulled H.
– GND
Output L3 DATA (software serial communication, with 2 modes available, LSB first)
Output L3 MODE (software serial communication, with 2 modes available, LSB first)
Output L3 CLK (software serial communication, with 2 modes available, LSB first)
Output MD changer mechanism, Lift motor drive output
Output MD changer mechanism, Lift motor drive output
Output PCNT0 output
Output Input/output port Not used. pulled H
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 ADMUTE output (for CK)
Output EMPHA output (for CK)
Output DAMUTE 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 classification/REC input)
Input MD changer mechanism, slot position
Input TEST K2 (Test key input 2)
– GND
Input HINF (Mechanism position/HEAD position)
– +3.15V
– +3.15V
Input Input/output port
Function
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MD-C2