TMP88CS38 datasheet(155/226 Pages) TOSHIBA

155 / 226 page

TMP88CS38/CM38A/CP38A

2007-09-12

88CS38-155

Note 1: THD: One cycle of HD signal.

Note 2: The data written to these control registers is transmitted to OSD circuit by

setting RGWR

(Bit2 in ORDON) to “1”.

Note 3: If display lines are overlapped each other, previous display line is enabled and

next line is disabled.

If vertical display start positions of two or more lines are set on same value,

high priority line is enabled. Lines of OSD (VS1 to VS12) are fixed priority

levels as follows:

VS1

> VS2 > VS3 > ...... > VS12

Set the vertical display start position not to overlap display lines.

Note 4: The line which is displayed off is managed as a small size character line.

Note 5: Transfer the contents of vertical display start position registers into OSD circuit

before the

position of the scanning line coincides with their own vertical display start

position.

(2) Area display position setting

The planes have the priority such as Code plane

> Area plane 1 > Area plane 2 >

Raster plane.

1. Horizontal display start and end position

The horizontal display start position can be set in 512 steps by writing to OSD

control registers AHSn8 to AHSn0 (Bit8 to 0 in ORAHSn). And also display stop

position is correspond to AHEn8 to AHEn0 (Bit8 to 0 in ORAHEn). (n: 1 to 2)

Horizontal display start position

AHSn

= (AHSn8 to AHSn0)H × 2TOSC

Horizontal display end position

AHEn

= (AHEn8 to AHEn0)H × 2TOSC

Note 1: TOSC: One cycle of OSD oscillation.

Note 2: If the horizontal display start position for characters is the same as that for

areas, the two positions are not displayed at the same time. The horizontal

display start position for characters is displayed 16 TOSC (Corresponding to a

VS5 (Display on, small character)

VS2 (Display canceled, middle character)

VS3 (Display on, small character)

Occasion of overlapping

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