Q-67107-H5237 데이터 시트보기 (PDF) - Micronas

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Q-67107-H5237

PRIMUS Powerful Scan Rate Converter including ultistandard Color Decoder

Micronas 

SDA 9402/02S(A31)

Preliminary Data Sheet 02.2001

System Description

characteristic for Y/C

5

0

LPPOST=0

LPPOST=1

5

10

15

20

25

30

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6

frequency [MHz]

Figure 5-14 Filter characteristics for Y/C mode

For applications for which a black offset is not desired, controlling may be done using

LMOFST. The positive or negative offset is added to the Y signal before scaling.

BLANKING BLACK

LMOFST='10'

LMOFST='00'

LMOFST='11'

LMOFST='01'

BLANKING BLACK

LMOFST='10'

LMOFST='00'

LMOFST='11'

LMOFST='01'

Input signals without 7.5IRE offset

Input signals with 7.5IRE offset

Figure 5-15 Adjustment of ’Black-’ to ’Blankingvalue’ at analog output

5.2

RGB-Frontend

An analog RGB input port for an external RGB or YUV source is available. The incoming

signal is clamped to the back porch by a clamping pulse. As the memory is only able to

store a 4:2:2 picture, the YUV input signal is downconverted to 4:2:2. There are two

Micronas

5-27

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