SDA9489X Datasheet, PDF(27/102 Page) List of Unclassifed Manufacturers – PIP IV Advanced SOPHISTICUS High-End Picture-In-Picture ICs

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SDA9489X Datasheet, PDF (27/102 Pages) List of Unclassifed Manufacturers – PIP IV Advanced SOPHISTICUS High-End Picture-In-Picture ICs

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SDA 9489X

SDA 9589X

Preliminary Data Sheet

System Description

SDA 9589X and SDA 9489X allow multiple scan rates for the use in desktop video

applications, VGA compatible or 100Hz TV sets. All features are provided in ânormalâ

operating modes at auto detected 50Hz and 60 Hz parent and inset standards. 2fH

modes (100/120Hz and progressive) are supported by line frequency- and pixel clock

doubling and are not detected automatically. Even on a 16:9 picture tube correct aspect

ratio can be displayed by selecting the suitable parent clock. The video synthesizer

generates also a special pixel clock for VGA display (see chapter 5.5.9 for details). As

(S)VGA consists of a variety of scan rates the correct aspect ratio is not adjustable for

all modes with the parent clock (HZOOM) because of the limited count of frequencies.

For single PIP only, correct aspect ratio is maintained by the vertical and horizontal

scaler (HSHRINK and VSHRINK).

It is possible to display (S)VGA sources for parent display, as long as the horizontal

frequency is lower than 40 kHz and the signal does not contain more than 1023 lines.

For progressive scan mode, PROGEN must be set. Additionally field-mode should be

forced to prevent unallowed frame-mode displaying (FIESEL). As the (S)VGA normally

does not fit to the display raster generated in the vertical noise suppression, VSPNSRQ

should be disabled. (S)VGA signals for inset channel are not supported.

PROGEN

READD

Expected input signal

50 or 60 Hz signal interlace

100 or 120 Hz signals interlace

(reserved)

50 or 60 Hz or (S)VGA signal progressive

Table 4-15 Selection of display field repetition

4.7.3

Display standard

For a single-PiP, the number of displayed lines depends on the selected picture size and

on the signal standard. For multi picture display, the number of displayed lines depends

on the selected picture size and on the signal standard of the parent signal. Additionally,

a standard can be forced by DISPSTD.

Micronas

4-27

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