Sony MDS-NT1 Service Manual page 55

MAIN BOARD IC301 M30835FJGP-01 (SYSTEM CONTROLLER)
Pin No. Pin Name
1 NC
2 RMC
3 NETMD_SO
4 NETMD_SI
5 NETMD_CLK
6 BYTE
7 CNVSS
8, 9 NC
10
S.RESET
11 XOUT
12 VSS
13 XIN
14 VCC
15 NMI
16 DQSY
17 P.DOWN
20 SQSY
19 to 22 NC
23 XINT
24 to 26 NC
27 I2C_CLK
28 I2C_DATA
29 SWDT
30 SRDT
31
SCLK
32 RTSI
33 to 35 NC
36 MUTE
37 ADA_RESET
38 ADA_LATCH
39 EPM
40, 41 NC
42 MOD
43
LDON
44 CE
45 LIMIT-IN
46 WRPWR
47 REC-SW
48 ADA_RESET
49 SENSE
I/O
— Not used
I Remote control signal input terminal Not used
O
Serial data output to the USB interface IC
I
Serial data input from the USB interface IC
O
Serial data transfer clock output to the USB interface IC
I External data bus line byte selection signal input "L": 16 bit, "H": 8 bit (fixed at "L")
— Not used
— Not used
System reset signal input terminal "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it change to "H"
I System clock input terminal (10 MHz)
— Ground terminal
O
System clock output terminal (10 MHz)
— Power supply terminal (+3.3V)
I Non-maskable interrupt input terminal Not used
Digital In U-bit CD format subcode Q sync (SCOR) input terminal
I
"L" is input every 13.3 msec Almost all, "H" is input
I Power down detection signal input terminal
Subcode Q sync (SCOR) input terminal
I
"L" is input every 13.3 msec Almost all, "H" is input
— Not used
I Interrupt status input from the mechanism deck section
— Not used
I/O
Communication data reading clock signal output terminal Not used
I/O
Communication data bus input/output terminal Not used
O Writing data output to the mechanism deck section and the D/A converter
I
Reading data input from the mechanism deck section
O
Serial data transfer clock signal output to the mechanism deck section and the D/A converter
— Not used
— Not used
O Audio line muting control signal output terminal "L": line muting on
O Reset signal output to the D/A converter "L": reset
O Serial data latch signal output to the D/A converter "L": reset
— Not used
— Not used
Laser modulation select signal output terminal Stop: "L" Playback power: "H"
O
Recoding power: "H" pulse is inputted in a cycle of 2 seconds
Laser diode on/off control signal output to the automatic power control circuit
O
"H": laser diode on
I
Command chip enable signal output to the D-RAM
Detection input from the sled limit-in detect switch (S101)
I
The optical pick-up is inner position when "L"
O Laser power select signal output terminal "L": playback mode, "H": recording mode
I
Detection input from the recording position detect switch "L": active
O Reset signal output to the mechanism deck section "L": reset
I
Internal status (SENSE) signal input to the mechanism deck section
Description
MDS-NT1
55