Yamaha MDX-9 Service Manual download pdf (Page 31)

MDX-596

No. Pin Name I/O

1 4M/16M O

2 64M O

3 LDVAR O

4* ADJS O

5 CIN I

6* NC

7 UNLOCK I

8 BYTE I

9 CNVss I

10* STID OUT O

11* SEACH OUT O

12 RESET I

13* NC

14 Vss

15 MCCK I

16 Vcc

17 P85 I

18 DINT I

19 SFSY I

20 ST-ID I

21 SERCH I

22 MDRSW O

23* CDB SEL O

24 DSENSE I

25 P-DOWN I

26 HD ON O

27 EEPRO O

28 HFON O

29 EEPK O

30 EEPD I/O

31 MD DATA O

32 K DATA I

33 DSCK I

34 DSTB O

35* NC O

36 SBO I

37 SBCK O

38 DISC O

39 R/P O

40 FOK I

41 FLASH L I

42 SGAIN O

43 SYRS O

44 SYRD O

45 SYWR O

46 FLASH H I

47 SYS D7 I/O

48 SYS D6 I/O

49 SYS D5 I/O

50 SYS D4 I/O

51 SYS D3 I/O

52 SYS D2 I/O

53 SYS D1 I/O

54 SYS D0 I/O

The * marked terminal is a terminal which is not connected externally (open terminal).

IC1401 : iX0324AW

MD System Microprocessor

Function

4M/16M DRAM select input

64M DRAM select input

LDVAR (Laser power adjustment output)

ADJS (for automatic adjustment step check)

CIN (Track count signal input)

Unused

ERR input (to unlock monitor PLL)

GND

ST-ID output

MD search output

RESET input

Clock output

GND

EXTAL (8.4672MHz)

+3.15V

Input/output port P85

DINT (interrupt input from MD•LSI)

Interrupt input

ST-ID input (MD-ON)

CD search input (Synchro REC interrupt input)

MD RSW output

CD BLK SEL output

DSENSE (Servo sense input from MD-LSI)

P-DOWN (power failure detect)

HDON (Magnetic head current ON/OFF output)

EEPROM protect cancel output

HFON

EEPROM serial clock output

EEPROM data input/output

MD data output

System computer data input

System computer communication clock input

DSTB (system computer communication enabled and during communication)

Unused

Sub-code serial data input

Sub-code communication serial clock output

DISC

R/P output (REC/PLAY select)

FOK (focus servo state monitor input)

Flash write select

SGAIN

MD LSI register select signal output

SYRD (MD-LSI read signal output)

SYWR (MD-LSI write signal output)

Flash write select

SYS D7 (data bus 7)

SYS D6 (data bus 6)

SYS D5 (data bus 5)

SYS D4 (data bus 4)

SYS D3 (data bus 3)

SYS D2 (data bus 2)

SYS D1 (data bus 1)

SYS D0 (Data bus 0)

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Yamaha MDX-9 Service Manual Page 31

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