SPT2110 Просмотр технического описания (PDF) - Signal Processing Technologies

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Компоненты Описание

производитель

SPT2110

NTSC/PAL VIDEO DECODER

Signal Processing Technologies 

Figure 5 - Typical Interface Circuit

FROM MPU DATA BUS

FROM MPU CONTROL

FROM MPU CONTROL

FROM MPU CONTROL

FROM MPU CONTROL

FROM MPU CONTROL

SPT7852.38

SPT7852.37

(LUMINANCE

SPT7852.36

OR COMPOSITE

DIGITIZED VIDEO

SPT7852.35

FROM "A"

SECTION OF

SPT7852.34

SPT7852)

SPT7852.33

SPT7852.32

SPT7852.31

SPT7852.30

SPT7852.18

SPT7852.19

(CHROMINANCE

DIGITIZED VIDEO

FROM "B"

SECTION OF

SPT7852)

SPT7852.20

SPT7852.21

SPT7852.22

SPT7852.23

SPT7852.24

SPT7852.25

SPT7852.26

SPT7852.28

FROM:

POWER-ON

RESET,

SYSTEM

RESET

AND/OR

MPU CONTROL

RESET

8

12

CS_

11

RS

10

RD_

9

WR_

88

LUM8

87

LUM7

86

LUM6

85

LUM5

84

LUM4

83

LUM3

82

LUM2

81

LUM1

80

LUM0

6

CHR8

5

CHR7

4

CHR6

3

CHR5

2

CHR4

96

CHR3

95

CHR2

94

CHR1

93

CHR0

61

CLOCK

8

RESET_

SPT2110

Video

Decoder

3.3 V

******

47

Y/RC7

48

Y/RC6

49

Y/RC5

52

Y/RC4

53

Y/RC3

54

Y/RC2

55

Y/RC1

56

Y/RC0

37

C/G7

38

C/G6

39

C/G5

40

C/G4

41

C/G3

42

C/G2

43

C/G1

44

C/G0

27

B7

28

B6

29

B5

30

B4

31

B3

32

B2

33

B1

34

B0

66

ODD

BUFFER

AND/OR

LOGIC

LEVEL

TRANSLATOR

(DECODED VIDEO

DATA CAN GO TO

FIFO, RAM, VIDEO

ENCODER, ETC.)

8

(LUMINANCE

OR RED

DECODED

VIDEO)

BUFFER

AND/OR

LOGIC

LEVEL

TRANSLATOR

8

(CHROMINANCE

OR GREEN

DECODED

VIDEO)

BUFFER

AND/OR

LOGIC

LEVEL

TRANSLATOR

8

(RED

DECODED

VIDEO)

BUFFER

AND/OR

LOGIC

LEVEL

TRANSLATOR

5

TO: VIDEO ENCODING

CIRCUITRY

NOTES:

DIGITAL GROUND, CONNECTED DIRECTLY TO DIGITAL GROUND PLANE

* DECOUPLING AND FILTER CAPACITORS LOCATED AS CLOSE TO THE DECODER AS POSSIBLE WITH SHORT PATH TO GROUND

VALUE OF 0.1 µF.

TO: SYSTEM PROCESSOR TO

VERIFY VIDEO IS BEING DETECTED

TO: VIDEO DATA CONTROL AND

TIMING CIRCUIT

SPT

16

SPT2110

3/27/98

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