Sony STR-K790 Service Manual - Page 39

39

STR-K790

•

IC Pin Function Description

DIGITAL BOARD

IC1101

MB90F045PF-G-9033-SPE1 (SYSTEM CONTROLLER)

Pin No.

Pin Name

I/O

Description

1

DATAO

I

Audio data signal input from DIR

2

GP9

I

GP9 signal input from DSP

3

BST

O

BST signal output to DSP

4

HCS

O

HCS signal output to DSP

5

HACN

I

HACN signal input from DSP

6

XRST

O

Reset signal output to DSP

7

PM

O

PM signal output to DSP

8

GP12

O

GP12 signal output to DSP

9

FL_LAT

O

FL driver latch signal output

10

PCM1609/1803_RST

O

IC reset signal output to DAC and ADC

11

VSS

—

Ground terminal

12

PCM1609_ML

O

Latch signal output to DAC

13

PCM1609_MC

O

Clock signal output to DAC

14

PCM1609_MDI

O

IC data output to DAC

15

PCM1609_MDO

I

IC data input from DAC

16

FL_CLK

O

FL driver clock signal output terminal

17

FL_DATA

O

FL driver data signal output terminal

18

HDOUT

I

HDOUT signal input from DSP

19

HDIN

O

HDIN signal output to DSP

20

HCLK

O

Clock signal output to DSP

21

TUNING_A

I

Tuning encoder input (not used)

22

TUNING_B

I

Tuning encoder input (not used)

23

VCC5

—

Power supply (+3.3V)

24

V_SW1

O

Composite video signal select 1 (not used)

25

V_SW2

O

Composite video signal select 2 (not used)

26

C LINK_DET

I

C link detect input (not used)

27

FLASH2/C LINK_RX

I

for FLASH programming

(MICLO)

28

FLASH1/C LINK_TX

O

for FLASH programming

(MDCLI)

29

SDA

I

EEPROM data signal input terminal

30

SCL

O

EEPROM clock signal output terminal

31

ENC_A

I

Input selector Encoder (A) signal input

32

ENC_B

I

Input selector Encoder (B) signal input

33

NC

—

Not used (Open)

34

NC

—

Not used (Open)

35

AVCC

—

Analog power supply (+3.3V)

36

AVRH

I

Analog reference voltage input (+3.3V)

37

AVSS

—

Analog ground terminal

38

ADCC

I

ADCC signal input

39

A/D1

I

Function key push signal input

40

A/D2

I

Function key push signal input

41

VERSION

I

Version setting input terminal (DESTINATION)

42

VSS

—

Ground terminal

43

TUNER SD

I

RDS signal detect input (AEP, UK only)

44

MODEL

I

MODEL select input

45

VAX CTRL

I

Vacs control input

Section	Page
COVER	1
TABLE OF CONTENTS	3
1.GENERAL	4
2.TEST MODE	10
3.ELECTRICAL ADJUSTMENT	12
4.DIAGRAMS	13
4-1. BLOCK DIAGRAM – MAIN SECTION –	14
4-2. BLOCK DIAGRAM – DISPLAY/POWER SECTION –	15
4-3. PRINTED WIRING BOARD – DIGITAL BOARD (SIDE A) –	16
4-4. PRINTED WIRING BOARD – DIGITAL BOARD (SIDE B) –	17
4-5. SCHEMATIC DIAGRAM – DIGITAL BOARD (1/5) –	18
4-6. SCHEMATIC DIAGRAM – DIGITAL BOARD (2/5) –	19
4-7. SCHEMATIC DIAGRAM – DIGITAL BOARD (3/5) –	20
4-8. SCHEMATIC DIAGRAM – DIGITAL BOARD (4/5) –	21
4-9. SCHEMATIC DIAGRAM – DIGITAL BOARD (5/5) –	22
4-10. PRINTED WIRING BOARDS – HDMI SW BOARD, HDMI BRIDGE BOARD (AEP, UK only) –	23
4-11. SCHEMATIC DIAGRAM – HDMI SW BOARD, HDMI BRIDGE BOARD (AEP, UK only) –	24
4-12. PRINTED WIRING BOARD – MAIN BOARD –	25
4-13. PRINTED WIRING BOARD – STANDBY BOARD –	26
4-14. SCHEMATIC DIAGRAM – MAIN BOARD (1/4) –	27
4-15. SCHEMATIC DIAGRAM – MAIN BOARD (2/4), STANDBY BOARD –	28
4-16. SCHEMATIC DIAGRAM – MAIN BOARD (3/4) –	29
4-17. SCHEMATIC DIAGRAM – MAIN BOARD (4/4) –	30
4-18. PRINTED WIRING BOARD – DISPLAY BOARD –	31
4-19. SCHEMATIC DIAGRAM – DISPLAY BOARD –	32
4-20. PRINTED WIRING BOARDS – POWER BOARD, DCAC BOARD, HEADPHONE BOARD –	33
4-21. SCHEMATIC DIAGRAM – POWER BOARD, DCAC BOARD, HEADPHONE BOARD –	34
5.EXPLODED VIEWS	42
5-1. FRONT PANEL SECTION	42
5-2. CHASSIS SECTION	43
6.ELECTRICAL PARTS LIST	44
DCAC	44
DIGITAL	44
DISPLAY	48
HDMI SW	48
HDMI_BRIDGE	49
HEADPHONE	49
MAIN	49
POWER	53
STANDBY	54

Sony STR-K790 Service Manual - Page 39

IC Pin Function Description, DIGITAL BOARD, IC1101, MB90F045PF-G-9033-SPE1 SYSTEM CONTROLLER, Pin No

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