
2002 May 06
33
Philips Semiconductors
Objective specification
Enhanced TV microcontrollers with
On-Screen Display (OSD)
SAA567x; SAA569x
Text Register 30 (TXT30)
TC B2 to TC B0
BOTTOM/TOP B
language control bits (C12, C13 and C14) that has twist character set for Page B
Display memory rows 0 to 11 when double height bit is set on display Page B
(logic 0). Display memory rows 12 to 23 when double height bit is set on display
Page B (logic 1)
display each character as twice normal height on display Page B (logic 1)
Display memory row 24 information below Teletext page (on display row 24) on
display Page B (logic 0); display memory row 24 information above Teletext page
(on display row 0) on display Page B (logic 1)
display row 24 from basic page memory on display Page B (logic 0) display
row 24 from appropriate location in extension memory on display Page B
(logic 1)
display only row 24 on display Page B (logic 1)
DOUBLE HEIGHT B
STATUS ROW TOP B
DISPLAY X24 B
DISPLAY STATUS ROW ONLY B
Text Register 31 (TXT31)
GPF11 to GPF10
general purpose register, bits defined by mask programmable location
(Character ROM address 09FEH)
00 = reserved
01 = 80C51 configured for 12 MHz operation
10 = reserved
11 = reserved
GPF9 to GPF8
Text Register 32 (TXT32)
9FE11
9FF11 to 9FF5
reserved
mask programmable bits available for UOC configuration (Character ROM
address 09FFH)
Text Register 33 (TXT33)
BFE7 to BFE0
mask programmable bits available for UOC configuration (Character ROM
address 0BFEH)
Text Register 34 (TXT34)
BFE11 to BFE8
mask programmable bits available for UOC configuration (Character ROM
address 0BFEH)
Text Register 35 (TXT35)
PKT1-24<7:0>
Teletext Packets 1 to 24 received for blocks 7 to 0, set by hardware and cleared
by software; Teletext Packets 1 to 24 received after a header in any one Vertical
Blanking Interval (VBI) (logic 1)
Text Register 36 (TXT36)
PKT1-24<9:8>
Teletext Packets 1 to 24 received for blocks 9 to 8, set by hardware and cleared
by software; Teletext Packets 1 to 24 received after a header in any one VBI
(logic 1)
BITS
FUNCTION