Sony MZ-N505 service manual Not used

Models: MZ-N505

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MZ-N505

IC801 CXD2677-202GA (SYSTEM CONTROLLER, DIGITAL SIGNAL PROCESSOR, 16M BIT D-RAM)

Pin No.

Pin Name

I/O

 

 

Description

 

 

 

 

 

 

1

NC

O

Load address strobe signal output terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

2

NC

I

Test input terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

 

 

3 to 7

NC

O

Address signal output terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

 

8, 9

NC

I/O

Two-way data bus terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

 

10, 11

DRAMVDD0, 1

Power supply terminal (for D-RAM) (+2.4V)

 

 

 

12, 13

DRAMVSS0, 1

Ground terminal (for D-RAM)

 

 

 

 

 

14, 15

NC

I/O

Two-way data bus terminal for D-RAM

Not used

 

 

16 to 19

NC

O

Address signal output terminal for D-RAM

Not used

 

 

 

 

 

 

 

20

NC

O

Column address strobe signal output terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

21

NC

I

Test input terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

 

 

22, 23

NC

O

Address signal output terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

 

 

24

DVSS0

Ground terminal (for the DSP block)

 

 

 

 

25

DVDD0

Power supply terminal (for the DSP block) (+1.5V)

 

 

26

OFTRK

I

Off track signal input from the DSP monitor (3)

 

 

 

 

 

 

27

SSB DATA

I/O

SSB data input/output with the RF amplifier and the remote commander attached headphone

 

 

 

 

 

 

 

 

28

SSB CLK

O

SSB clock output to the RF amplifier

 

 

 

 

 

 

 

 

29

VREC PWM

O

PWM signal output for the Over write head drive power supply voltage control to the power

control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

VL PWM

O

PWM signal output for the laser power supply voltage control to the power control

31

VC PWM

O

PWM signal output for the system power supply voltage control to the power control

32

NC (VD PWM)

O

VD power supply voltage control signal output terminal

Not used

 

 

 

 

 

 

 

 

 

33

NC

Not used

 

 

 

 

 

 

 

 

 

34

IFVDD0

Power supply terminal (for the microcomputer I/F block) (+2.3V)

 

 

 

 

 

 

35

IFVSS0

Ground terminal (for the microcomputer I/F block)

 

 

 

 

 

 

 

 

36

OPT DET

I

DIN plug detection signal input terminal

“H”: DIN plug

 

37

XJACK DET

I

LINE IN plug detection signal input terminal

“L”: LINE or OPT plug

38

XMIC DET

I

Microphone plug detection signal input terminal “L”: microphone plug Not used

39

OPEN CLOSE

I

Open/close detection switch of the upper panel input terminal

SW

“L”: when upper panel close

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40, 41

SET CODE0, 1

I

Input terminal for the set (fixed at “L” in this set)

 

 

 

 

 

 

 

 

 

 

42

SET CODE2

I

Input terminal for the set (open in this set)

 

 

 

 

 

 

 

 

 

 

43

SET CODE3

I

Input terminal for the set (fixed at “L” in this set)

 

 

44

XPATCH

I

Patch function detection signal input terminal

“L”: patch function Not used

45

SI0

I

Serial data input from the nonvolatile memory

 

 

46

SO0

O

Serial data output to the nonvolatile memory, A/D converter and liquid crystal display element

module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

47

SCK0

O

Serial clock signal output to the nonvolatile memory, A/D converter and liquid crystal display

element module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

48

XGUM ON

I

Rechargeable battery detection switch input terminal

“L”: there is rechargeable battery

Not used

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49

BEEP

O

Beep sound control signal output to the headphone amplifier

50, 51

TEST1, TEST0

I

Input terminal for the main test (normally fixed at “L”)

 

 

52

KDO

O

Data output terminal Not used

 

 

 

 

 

 

 

 

 

 

 

 

 

53

KRB

I

Ready/busy signal input terminal

Not used

 

 

 

 

 

 

 

 

 

 

 

54

KCLK

O

Clock signal output terminal Not used

 

 

 

 

 

 

 

 

 

 

 

 

55

KCS

O

Chip select signal output terminal

Not used

 

 

 

 

 

 

 

 

 

 

 

 

49

Page 49
Image 49
Sony MZ-N505 service manual Not used