Yamaha MDX-9 Service Manual download pdf (Page 29)

MDX-E100

No. Pin Name I/O

1* NX O

2 SBCK O

3 LDVAR O

4* ADIS O

5 SFSY O

6 LOADIN I

7 ERROR 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 DSENSE I

20 ST-ID I

21 SERCH I

22 MDRSW O

23* FSW I

24 VARI-PSW O

25 P-DOWN I

26 HD ON O

27 LD+ O

28 LD- O

29 CIN I

30 INNER I

31 DATA O

32 LATCH O

33 CLOCK O

34 DSTB O

35 MD DATA O

36 K DATA I

37 DSCK I

38 4M/16M I

39 R/P O

40 FOK I

41 PLL SEL O

42 S2 O

43 S1 O

44 SYRS O

45 SYRD O

46 SYWR O

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 : iX0290AW

MD System Microprocessor

Function

Input/output port P96

Input/output port P95

LDVAR (Laser power adjustment output)

ADJS (for automatic adjustment step check)

Input/output port P92

LD SW CK input (interrupt input only when used individually)

ERR input (UNLOCK of 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)

DSENSE (servo sense input from MD•LSI)

ST-ID input (MD-ON)

CD search input (Synchro REC interrupt input)

MD RSW output

FSW1 (SW for power frequency switching)

Corresponding measure to variable pitch, provided (H)/ not provided (L)

P-DOWN (power failure detect)

HDON (Magnetic head current ON/OFF output)

LD+ (Loading motor + control output)

LD- (Loading motor - control output)

CIN (Track count signal input)

INN SW (Inner SW detect input)

R-DATA

R-LATCH

R-CLK

DSTB (System control communication possible and communication being executed)

MD DATA (MD data output)

K DATA (System control data input)

DSCK (System control communication clock input)

4M/16M DRAM select input

R/P output (REC/PLAY switching)

FOK (Focus servo state monitor input)

Input/output port P55

S2 output

S1 output

SYRS (MD-LSI register select signal output)

SYRD (MD-LSI read signal output)

SYWR (MD-LSI write signal output)

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 29

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