Yamaha MDX-E100 Service Manual page 30

MDX-E100
IC1401 : iX0290AW
MD System Microprocessor
No. Pin Name
55* P37/A15
56* P36
57* P35
58 EEPRO
59 EPCS
60 EEPD
61 EEPK
62 Vcc
63* P30
64 GND
65 L3 DATA
66 L3 MODE
67 L3 CLK
68* P24
69* P23
70 PCNT0
71* PCNT1
72 LD ON
73 A/B
74 SBSY
75* DAP ON
76* DFS0
77* DFS1
78 DIG EX
79 DIG CD
80 XRST
81* AD MUTE
82* EMPH
83* DAMUT
84 MUTE
85 DOUTM
86 TEST2
87 TEST1
88 TEST0
89 AVCK3
90 AVCK2
91 AVCK1
92 DTEMP
93 MINF
94 TEST K1
95 TEST K2
96 GND
97 HINF
98 VREF
99 AVcc
100 S80
The * marked terminal is a terminal which is not connected externally (open terminal).
29
I/O
O
Input/output port P37
O
Input/output port P36
O
Input/output port P35
O
EEPRO (E2PROM protect cancel)
O
EPCS (E2PROM chip selector output)
I/O
EEPD (E2PROM serial data output)
O
EEPK (E2PROM serial clock output)
+3.15V
I
O
Input/output port P30
GND
O
L3 DATA (soft serial communication, 2 modes provided, LSB first)
O
L3 MODE (soft serial communication, 2 modes provided, LSB first)
O
L3 CLK (soft serial communication, 2 modes provided, LSB first)
O Input/output port P24
O
Input/output port P23
O
PCNT0 output
O
Input/output port
O
LDON output (H: ON)
O
ANLPTR output
O
ADPON output (for CK)
O
DAPON output (for CK)
O
DFS0 output
O
DFS1 output
O
DIG EX output (for CK)
O
DIG CD OUTPUT (for CK)
O
XRST (system reset output)
O
ADMUTE output (for CK)
O
EMPHA output (for CK)
O DAMUTE output (for CK)
O
MUTE output
O
DOUTM output (for CK)
I
TEST2 (special mode select 2)
I
TEST1 (special mode select 1)
I
TEST0 (special mode select 0)
I
AVCK3 (special mode monitor input)
I
AVCK2 (AD/DA section 3.1V monitor input)
I
AVCK1 (DOUT section 5V monitor input)
I
DTEMP (temperature detect input)
I
MINF (for each disc type/REC input)
I
TEST K1 (test key input 1)
I
TEST K2 (test key input 2)
GND
I
HINF (mechanical unit position/head position)
+3.15V
+3.15V
I
Input/output port
Function