Sony Walkman D-NE270, Service Manual

24

D-NE270

IC801   TMP91CY28FG-5GO9 (SYSTEM CONTROLLER)

Pin No.

Pin Name

I/O

Description

1, 2

GND

—

Ground terminal

3

VCPU

—

Power supply terminal (+2.0V)

4

XRST_O

O

System reset signal output to the CD DSP

5

PWM_O

O

Power on/off signal output terminal    Not used

6

BEEP_O

O

Beep signal output to the electrical volume

7

AMUTE_O

O

Analog muting on/off control signal output to the CD DSP     “H”: muting on

8

LINEOUT_I

I

Not used

9

OPTOUT_I

I

Not used

10

FG_I

I

Motor flag monitor input from the power control

11

REQ_I

I

Request signal input from the MP3 decoder

12

HG-XSTB_O

O

Strobe signal output to optical pick-up block

13

HG-GUP_O

O

Guide-up signal output to optical pick-up block

14, 15

RE1_I, RE2_I

I

Encode signal input terminal   Not used

16

LCD_REQ_O

O

Request signal output terminal    Not used

17

SDXLAT_O

O

Data latch signal output to the MP3 decoder

18

SDCLK_O

O

Serial data transfer clock output to the MP3 decoder and EEPROM

19

SDOUT_O

O

Serial data output to the MP3 decoder and EEPROM

20

SDIN_I

I

Serial data input from the MP3 decoder and EEPROM

21

DTS_SDTO

O

Serial data output terminal    Not used

22

DTS_SDTI

I

Serial data input from terminal    Not used

23

DTS_SCK

O

Serial data transfer clock output terminal    Not used

24

AMO_I

I

Not used

25

VCPU

—

Power supply terminal (+2.0V)

26

XOUT

O

Not used

27

GND

—

Ground terminal

28

XIN

I

System clock signal input from the CD DSP

29

AM1_I

I

Not used

30

XRESET_I

I

System reset signal input from the power control

31

TSB

I

Not used

32

XWAKE_O

O

WAKE-UP signal output to the power control

33

EMU0_O

O

Not used

34

EMU1_O

O

Not used

35

ACKCD_I

I

CD acknowledge signal input terminal    Not used

36

JOGKEY_I/

FAVKE_I

I

KEY interrupt signal input terminal

37

LID-SW_I

I

CD lid switch signal input terminal

38

EXTBAT_I

I

Not used

39

HP_TYPE_I

I

Not used

40

HOLD_I

I

HOLD switch signal input terminal

41

X_PEQ_EN_I

I

Not used

42

TEST_I

I

Test mode setting input terminal    “L”: test mode, Normally: “H”

43

NC

—

Not used

44 to 51

AD0 to AD7

I/O

Address and data input/output with the LCD unit

52

FOK_I

I

Focus OK signal input from the CD DSP

53

GFS_I

I

GFS signal input from the CD DSP

54

TUPWRON_O

O

Tuner power on/off control signal output terminal    Not used