
2002 May 06
30
Philips Semiconductors
Objective specification
Enhanced TV microcontrollers with
On-Screen Display (OSD)
SAA567x; SAA569x
SCREEN COL2 to SCREEN COL0 Defines colour to be displayed instead of TV picture and black background; these
bits <2:0> are equivalent to the RGB components. SCREEN COL<2:0>:
000 = transparent
001 = CLUT entry 9
010 = CLUT entry 10
011 = CLUT entry 11
100 = CLUT entry 12
101 = CLUT entry 13
110 = CLUT entry 14
111 = CLUT entry 15
Text Register 18 (TXT18)
NOT3 to NOT0
FORCE DISP FIELD
BS1 to BS0
National Option Table selection, maximum of 31 when used with EAST/WEST bit
forces the DISP FIELD bit in STATUS MMR to be toggled every Vsync (logic 1)
basic character set selection
Text Register 19 (TXT19)
TEN
TC2 to TC0
TS1 to TS0
enable twist character set (logic 1)
language control bits (C12, C13 and C14) that has twisted character set
twist character set selection
Text Register 20 (TXT20)
DRCS ENABLE
re-map column 8/9 to DRCS (or column 8/9/A/C/ if Extended DRCS is enabled),
TXT and CC modes (logic 1)
character code columns 8/9 (or column 8/9/A/C/ if Extended DRCS is enabled),
defined as double plane characters (special graphics characters) (logic 1)
EXTENDED SPECIAL GRAPHICS extended Special Graphics enabled user definable range for special graphics
characters, in CC mode only (logic 1)
CHAR SELECT ENABLE
enables character set selection in CC display mode (logic 1)
OSD LANG ENABLE
enable use of OSD LAN<2:0> to define language option for display, instead of
C12, C13 and C14
OSD LAN2 to OSD LAN0
alternative C12, C13 and C14 bits for use with OSD menus
OSD PLANES
Text Register 21 (TXT21)
DISP LINES1 to DISP LINES0
the number of display lines per character row; DISP LINES<1:0>:
00 = 10 lines per character (defaults to 9 lines in 525 mode)
01 = 13 lines per character
10 = 16 lines per character
11 = reserved
character matrix size bits; CHAR SIZE<1:0>:
00 = 10 lines per character (matrix 12
×
10)
01 = 13 lines per character (matrix 12
×
13)
10 = 16 lines per character (matrix 12
×
16)
11 = reserved
enable I
2
C-bus Port 1 selection (P1.5/SDA1 and P1.4/SCL1) (logic 1)
CHAR SIZE1 to CHAR SIZE0
I
2
C Port 1
BITS
FUNCTION