Sony MDS-M9 - Page 33

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I/O Function
Pin No. Pin Name
81
82
83
84
85
86
87
88
89
90
91
92
93 to 96
97
98
99
100
LDOUT
LDIN
REC-SW
PLAYSW
OUTSW
PROTECT
REFLECT
LIMIT IN
232C.4
232C.3
232C.2
232C.1
—
AVSS (AGND)
VREF (+5V)
TIMER REC/PLAY
INPUT SELECT
O
O
I
I
I
I
I
I
O
I
I
O
O
—
I
I
I
Loading motor (M191) control output*1
Detection input from the chucking-in switch (S193). When chucking: “L”.
Detection input from the loading-in switch (S191).
When the magnetic head is lowered: “L”, others: “H”.
Detection input from the loading-out switch (S192).
When loaded out: “L”, others: “H”.
Recording-protect claw detection from the protect detection switch (S102-1).
When protected: “H”.
Disc reflection rate detection from the reflect detection switch (S102-2).
Disc with lower reflection rate: “H”.
Detection from the limit-in switch (S101).
Sled limit-in: “L”.
UART data transmission request signal output to display control (IC701).
UART data transmission request signal input from display control (IC701).
UART data input from display control (IC701).
UART data output to display control (IC701).
Not used in this unit (Fixed at “L”)
Ground pin
Reference voltage input (+5V)
Timer recording/playback/OFF switching input. Not used in this unit (Fixed at “L”)
Select signal input from input signals (analog/digital input).
Analog input: “L”, digital input: “H”. Not used in this unit (Fixed at “L”)
Operation
Pin
* 1 Loading motor control
“L”
“H”
“H”
“H”
IN OUT BRAKE
LDIN 82 pin
LDOUT 81 pin
“H”
“L”