Read Sony MDS-NT1 Service Manual online
55
MDS-NT1
•
MAIN BOARD IC301 M30823MH-050FP (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
NC
—
Not used
2
RMC
I
Remote control signal input terminal Not used
3
NETMD_SO
O
Serial data output to the USB interface IC
4
NETMD_SI
I
Serial data input from the USB interface IC
5
NETMD_CLK
O
Serial data transfer clock output to the USB interface IC
6
BYTE
I
External data bus line byte selection signal input “L”: 16 bit, “H”: 8 bit (fixed at “L”)
7
CNVSS
—
Not used
8, 9
NC
—
Not used
10
S.RESET
I
System reset signal input terminal “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it change to “H”
For several hundreds msec. after the power supply rises, “L” is input, then it change to “H”
11
XOUT
I
System clock input terminal (10 MHz)
12
VSS
—
Ground terminal
13
XIN
O
System clock output terminal (10 MHz)
14
VCC
—
Power supply terminal (+3.3V)
15
NMI
I
Non-maskable interrupt input terminal Not used
16
DQSY
I
Digital In U-bit CD format subcode Q sync (SCOR) input terminal
“L” is input every 13.3 msec Almost all, “H” is input
“L” is input every 13.3 msec Almost all, “H” is input
17
P.DOWN
I
Power down detection signal input terminal
20
SQSY
I
Subcode Q sync (SCOR) input terminal
“L” is input every 13.3 msec Almost all, “H” is input
“L” is input every 13.3 msec Almost all, “H” is input
19 to 22
NC
—
Not used
23
XINT
I
Interrupt status input from the mechanism deck section
24 to 26
NC
—
Not used
27
I2C_CLK
I/O
Communication data reading clock signal output terminal Not used
28
I2C_DATA
I/O
Communication data bus input/output terminal Not used
29
SWDT
O
Writing data output to the mechanism deck section and the D/A converter
30
SRDT
I
Reading data input from the mechanism deck section
31
SCLK
O
Serial data transfer clock signal output to the mechanism deck section and the D/A converter
32
RTSI
—
Not used
33 to 35
NC
—
Not used
36
MUTE
O
Audio line muting control signal output terminal “L”: line muting on
37
ADA_RESET
O
Reset signal output to the D/A converter “L”: reset
38
ADA_LATCH
O
Serial data latch signal output to the D/A converter “L”: reset
39
EPM
—
Not used
40, 41
NC
—
Not used
42
MOD
O
Laser modulation select signal output terminal Stop: “L” Playback power: “H”
Recoding power: “H” pulse is inputted in a cycle of 2 seconds
Recoding power: “H” pulse is inputted in a cycle of 2 seconds
43
LDON
O
Laser diode on/off control signal output to the automatic power control circuit
“H”: laser diode on
“H”: laser diode on
44
CE
I
Command chip enable signal output to the D-RAM
45
LIMIT-IN
I
Detection input from the sled limit-in detect switch (S101)
The optical pick-up is inner position when “L”
The optical pick-up is inner position when “L”
46
WRPWR
O
Laser power select signal output terminal “L”: playback mode, “H”: recording mode
47
REC-SW
I
Detection input from the recording position detect switch “L”: active
48
ADA_RESET
O
Reset signal output to the mechanism deck section “L”: reset
49
SENSE
I
Internal status (SENSE) signal input to the mechanism deck section
Ver 1.1
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