TDA9554PS datasheet(49/125 Pages) PHILIPS

49 / 125 page

2000 Jun 22

Philips Semiconductors

Tentative Device Speciﬁcation

TV signal processor-Teletext decoder with

embedded

µ-Controller

TDA955X/6X/8X PS/N1 series

SERIAL CHARACTER CODING

Table 18 Serial Character Coding

TXT MODE

Character coding is in a serial format, with only one

attributes being changed at any single location. The serial

attributes take effect either at the position of the attribute

(Set At), or at the following location (Set After). The

attribute remainseffective until either modified by new

serial attributes or until the end of the row.The default

settings at the start of a row is:

• foreground colour white (CLUT Address 7)

• background colour black (CLUT Address 8)

Bits

Description

Serial Mode 0

(“set at”)

Serial Mode 1

Char.Pos. 1 (“set at”)

Char.Pos. >1 (“set after”)

0-3

4 bits for 16 Background

colours

4 bits for 16 Background colours

0 = Underline OFF

1 = Underline ON

Horizontal Size:

0 = normal

1=x2

0 = Underline OFF

1 = Underline ON

0 = Overline OFF

1 = Overline ON

Vertical Size:

0 = normal

1=x2

0 = Overline OFF

1 = Overline ON

Display mode:

0 = Superimpose

1 = Boxing

Display mode:

0 = Superimpose

1 = Boxing

Display mode:

0 = Superimpose

1 = Boxing

0 = Flash OFF

1 = Flash ON

Foreground colour switch

0 = Bank 0 (colours 0-7)

1 = Bank 1 (colours 8-15)

Foreground colour switch

0 = Bank 0 (colours 0-7)

1 = Bank 1 (colours 8-15)

0 = Italics OFF

1 = Italics ON

Background colour duration:

0 = stop BGC

1 = set BGC to end of row

Background colour duration

(set at):

0 = stop BGC

1 = set BGC to end of row

0 = Fringing OFF

1 = Fringing ON

End of Row

0 = Continue Row

1 = End Row

End of Row (set at):

0 = Continue Row

1 = End Row

Switch for Serial coding

mode 0 and 1:

0 = mode 0

Switch for Serial coding mode 0

and 1:

1 = mode 1

Switch for Serial coding mode 0

and 1:

1 = mode 1

Mode bit:

1 = Serial code

Mode bit:

1 = Serial code

Mode bit:

1 = Serial code

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