
2004 Sep 03
31
Philips Semiconductors
Product specication
Enhanced TV microcontrollers with
On-Screen Display (OSD)
SAA56xx
Text Register 24 (TXT24)
BKGND OUT B
background colour displayed outside Teletext boxes (Teletext page) (logic 1)
BKGND IN B
background colour displayed inside Teletext boxes (Teletext page) (logic 1)
COR OUT B
COR active outside Teletext and OSD boxes (Teletext page) (logic 1)
COR IN B
COR active inside Teletext and OSD boxes (Teletext page) (logic 1)
TEXT OUT B
TEXT displayed outside Teletext boxes (Teletext page) (logic 1)
TEXT IN B
TEXT displayed inside Teletext boxes (Teletext page) (logic 1)
PICTURE ON OUT B
VIDEO displayed outside Teletext boxes (Teletext page) (logic 1)
PICTURE ON IN B
VIDEO displayed inside Teletext boxes (Teletext page) (logic 1)
Text Register 25 (TXT25)
BKGND OUT B
background colour displayed outside Teletext boxes (Sub-Title/Newsash page)
(logic 1)
BKGND IN B
background colour displayed inside Teletext boxes (Sub-Title/Newsash page)
(logic 1)
COR OUT B
COR active outside Teletext and OSD boxes (Sub-Title/Newsash page) (logic 1)
COR IN B
COR active inside Teletext and OSD boxes (Sub-Title/Newsash page) (logic 1)
TEXT OUT B
TEXT displayed outside Teletext boxes (Sub-Title/Newsash page) (logic 1)
TEXT IN B
TEXT displayed inside Teletext boxes (Sub-Title/Newsash page) (logic 1)
PICTURE ON OUT B
VIDEO displayed outside Teletext boxes (Sub-Title/Newsash page) (logic 1)
PICTURE ON IN B
VIDEO displayed inside Teletext boxes (Sub-Title/Newsash page) (logic 1)
Text Register 26 (TXT26)
EXTENDED DRCS
columns 8/9/A/C mapped to DRCS when DRCS characters enabled (allowing
64 DRCS characters) (logic 1); default (logic 0) only columns 8/9 mapped to
DRCS when DRCS characters enabled (allowing 32 DRCS characters
TRANS ENABLE B
display black background as video on Page B (logic 1)
C MESH ENABLE B
enable meshing of coloured background on Page B (logic 1)
B MESH ENABLE B
enable meshing of black background on Page B (logic 1)
SHADOW ENABLE B
disable display of shadow/fringing on Page B (logic 0)
display shadow/ fringe (default SE black) on Page B (logic 1)
BOX ON 24 B
enable display of Teletext boxes in memory row 24 of Page B (logic 1)
BOX ON 1 B to 23 B
enable display of Teletext boxes in memory row 1 to 23 of Page B (logic 1)
BOX ON 0 B
enable display of Teletext boxes in memory row 0 of Page B (logic 1)
BITS
FUNCTION