Read Sony CDX-MP50 Service Manual online
14
CDX-MP50
Pin No.
Pin Name
I/O
Pin Description
67
MD2
—
CPU operation mode setting pin
68
FL_BOOT
I
Flash write selection signal input (“L”: flash write mode)
69
FL_W
O
Flash write control signal output connected to pin 66 (FWE)
70
NC
O
Not used. (Open)
71
CDMON
O
CD mechanism power supply control signal output
72
DECINT
I
Interrupt signal input from the DSP IC
73
CLOSE
O
Front panel operation request output (Close)
74
OPEN
O
Front panel oparation request output (Open)
75
LINKOFF
O
LINK OFF signal output for UNI_LINK “H”: link off, “L”: link on
76
UNI_SO
O
Sony-Bus serial data output to the bus interface
77
UNI_SI
I
Sony-Bus serial data input from the bus interface
78
UNI_CK
I
Sony-Bus serial clock input from the bus interface
79
NC
O
Not used. (Open)
80
SDA
I/O
I2C interface data input/output
81
SCL
O
I2C interface clock output
82
NC
O
Not used. (Open)
83
TSO
O
Serial data output to the servo IC
84
TSI
I
Serial data input from the servo IC
85
TSCK
O
Serial clock output to the servo IC
86
LEDDAT
O
LED data output for the jig
87
LEDCLK
O
LED clock output for the jig
88
LEDLAT
O
LED latch signal output for the jig
89, 90
NC
O
Not used. (Open)
91
BUSON
I
Sony-Bus BUS ON signal input from the bus interface
92
BUCHK
I
Back up power supply detection signal input
93
A-ATT
O
Audio muting control signal output
94
CDON
O
Power control signal output for the CD servo “H”: servo on, “L”: during loading
95
NC
O
Not used. (Open)
96
U/J_SEL
I
Destination setting pin
97
TEXTSEL
I
CD text function setting pin
98
NC
O
Not used. (Open)
99
CFSEL
I
Custom file function setting pin
100
DOUT SEL
I
Digital output selection setting pin “H”: digital output available
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