Read Sharp CD-MD3000 (serv.man25) Service Manual online
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CD-MD3000H/CD-MD3000W
IC1401 RH-iX0349AWZZ: MD System Microcomputer (IX0349AW) (2/2)
Pin No.
Function
Terminal Name Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
52
SYS D2
Input/Output
SYS D2 (data bus 2)
53
SYS D1
Input/Output
SYS D1 (data bus 1)
54
SYS D0
Input/Output
SYS D0 (data bus 0)
55*
P37
Output
Input output port P37
56*
P36
Output
Input/output port P36
57*
P35
Output
Input/output port P35
58*
P34
Output
Input/output port P34
59*
P33
Output
Input/output port P33
60*
P32
Output
Input/output port P32
61
P31
Input
Input/output port P31
62
Vcc
Input
+3.15V
63
INNSW
Input
Pick most inner periphery detection input
64
GND
–
GND
65
L3 DATA
Output
L3 DATA (soft serial communication, 2 mode presence, LSB first)
66
L3 MODE
Output
L3 MODE (soft serial communication, 2 mode presence, LSB first)
67
L3 CLK
Output
L3 CLK (soft serial communication, 2 mode presence, LSB first)
68*
P24
Output
Input output port P24
69*
P23
Output
Input output port P23
70
PCNT0
Output
PCNT0 output
71*
LAST
Output
LAST
72
LD ON
Output
LDON output (H : ON)
73
A/B
Input
ANLPTR output. ADC/DAC selection input.
74
SBSY
Input
Subcode communication block synchro input.
75*
DAP ON
Output
DAPON output (for CK)
76*
DFS0
Output
DFS0 output
77*
DFS1
Output
DFS1 output
78
P12
Input
Input output port P12
79
P11
Input
Input/output port P11
80
XRST
Output
XRST (system reset output)
81*
AD MUTE
Output
ADMUTE output (for CK)
82
LD+
Output
Loading motor + side control output
83
LD-
Output
Loading motor - side control output
84*
MUTE
Output
MUTE output
85*
RAST
Output
RAST
86*
TEST2
Input
TEST 2
87*
TEST1
Input
TEST 1
88*
TEST0
Input
TEST 0
89
AVCK3
Input
AVCK3 (motor driver power monitor input)
90
AVCK2
Input
AVCK2 (AD/DA section 3.1 V monitor input)
91
AVCK1
Input
AVCK1 (head circuit power monitor input)
92
DTEMP
Input
DTEMP (temperature detection input)
93
MINF
Input
MINF (disc type/REC input/mecha position)
94*
TEST K1
Input
TEST K1
95*
TEST K2
Input
TEST K2
96
GND
–
GND
97*
NC
–
Not used
98
VREF
–
+3.15V
99
AVcc
–
+3.15V
100
PR
Input
Playback/recording unit setting input
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