Ic Pin Function Description - Sony MHC-NX1 Service Manual

7-15. IC PIN FUNCTION DESCRIPTION

MAIN BOARD IC101 M30622MA-A13FP (SYSTEM CONTROLER (CD MECHANISM CONTROL))
Pin No. Pin Name
1 CD DATA
2 CD CLK
3 XLT
4 XRST
5 NC
6 SQ DATA IN
7 SQ CLK
8 BYTE
9 CNVSS
10 XCIN
11 XCOUT
12 RESET
13 XOUT
14 VSS
15 XIN
16 VDD
17 NMI
18 WAKE UP
19 SCOR
LED POWER
20
CTRL
21 SENSE
22 CD HOLD
23 LED A5
24 LED G5
25 LED A4
26 LED G4
27 LED A3
28 LED G3
29 IIC CLK
30 IIC DATA
31 TXD1
32 RXD1
33 CLK1
34 RTS1
35 LED A2
36 LED G2
37 LED A1
38 LED G1
39 SOFT CHECK
40 LED G CDPS
41 XHOLD
34
I/O
O Serial data output to the CXD2587Q (IC101) on the CD block
O Serial data transfer clock signal output to the CXD2587Q (IC101) on the CD block
O Serial data latch pulse output to the CXD2587Q (IC101) on the CD block
Reset signal output to the CXD2587Q (IC101) and BA5974FP (IC102) on the CD block
O
"L": reset
O Not used (open)
I Subcode Q data input from the CXD2587Q (IC101) on the CD block
O Subcode Q data reading clock signal output to the CXD2587Q (IC101) on the CD block
I External data bus line byte selection signal input terminal Fixed at "L" in this set
— Ground terminal
I Sub system clock input terminal Not used ( fixed at "L")
O Sub system clock output terminal Not used (open)
System reset signal input from the reset signal generator (IC102) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O Main system clock output terminal (16 MHz)
— Ground terminal
I Main system clock input terminal (16 MHz)
— Power supply terminal (+5V)
I Non-maskable interrupt input terminal Fixed at "H" in this set
I Wakeup control signal input from the CPU in the STR-NX1/NX3 "H" active
I Subcode sync (S0+S1) detection signal input from the CXD2587Q (IC101) on the CD block
Power on/off control signal output of the key illumination LED (D201 to D204, D218 to D225)
O
"H": LED on
I Internal status detection monitor input from the CXD2587Q (IC101) on the CD block
O Laser power control signal output to the CXA2568M (IC103) on the CD block
O LED drive signal output of the DISC 5 indicator (D214) (for amber color)
O LED drive signal output of the DISC 5 indicator (D214) (for red color)
O LED drive signal output of the DISC 4 indicator (D210) (for amber color)
O LED drive signal output of the DISC 4 indicator (D210) (for red color)
O LED drive signal output of the DISC 3 indicator (D215) (for amber color)
O LED drive signal output of the DISC 3 indicator (D215) (for red color)
Communication data reading clock signal input or transfer clock signal output with the CPU in the
I/O
STR-NX1/NX3
I/O Communication data bus with the CPU in the STR-NX1/NX3
O Not used (open)
I Not used (fixed at "L")
I Not used (fixed at "L")
O Not used (open)
O LED drive signal output of the DISC 2 indicator (D213) (for amber color)
O LED drive signal output of the DISC 2 indicator (D213) (for red color)
O LED drive signal output of the DISC 1 indicator (D209) (for amber color)
O LED drive signal output of the DISC 1 indicator (D209) (for red color)
O Output terminal for the software check Not used (open)
LED drive signal output of the S (CD) indicator (D212)
O
I Not used (fixed at "L")
Description
"L": LED on