Sony MDS-NT1 - Manual (Page 55)

55
MDS-NT1
• MAIN BOARD IC301 M30835FJGP-01 (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”
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
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
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
43 LDON O
Laser diode on/off control signal output to the automatic power control circuit
“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”
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