Sony CDX-MP40 Service Manual page 16

Fm/am/mw/lw compact disc player
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CDX-MP40
Pin No.
Pin Name
67
MD2
68
FL_BOOT
69
FL_W
70
NC
71
CDMON
72
DECINT
73
CLOSE
74
OPEN
75
LINKOFF
76
UNI_SO
77
UNI_SI
78
UNI_CK
79
NC
80
SDA
81
SCL
82
NC
83
TSO
84
TSI
85
TSCK
86
LEDDAT
87
LEDCLK
88
LEDLAT
89, 90
NC
91
BUSON
92
BUCHK
93
A-ATT
94
CDON
95
NC
96
U/J_SEL
97
TEXTSEL
98
NC
99
CFSEL
100
DOUT SEL
16
I/O
CPU operation mode setting pin
I
Flash write selection signal input ("L": flash write mode)
O
Flash write control signal output connected to pin 66 (FWE)
O
Not used. (Open)
O
CD mechanism power supply control signal output
I
Interrupt signal input from the DSP IC
O
Front panel operation request output (Close)
O
Front panel oparation request output (Open)
O
LINK OFF signal output for UNI_LINK "H": link off, "L": link on
O
Sony-Bus serial data output to the bus interface
I
Sony-Bus serial data input from the bus interface
I
Sony-Bus serial clock input from the bus interface
O
Not used. (Open)
I/O
I2C interface data input/output
O
I2C interface clock output
O
Not used. (Open)
O
Serial data output to the servo IC
I
Serial data input from the servo IC
O
Serial clock output to the servo IC
O
LED data output for the jig
O
LED clock output for the jig
O
LED latch signal output for the jig
O
Not used. (Open)
I
Sony-Bus BUS ON signal input from the bus interface
I
Back up power supply detection signal input
O
Audio muting control signal output
O
Power control signal output for the CD servo "H": servo on, "L": during loading
O
Not used. (Open)
I
Destination setting pin
I
CD text function setting pin
O
Not used. (Open)
I
Custom file function setting pin
I
Digital output selection setting pin "H": digital output available
Pin Description

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