SAA5563PS View Datasheet(PDF) - Philips Electronics
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SAA5563PS Datasheet PDF : 101 Pages
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Philips Semiconductors
Enhanced TV microcontrollers with
On-Screen Display (OSD)
Preliminary specification
SAA55xx
8.6 Character set feature bits
Features available on the SAA55xx devices are reflected in a specific area of the character ROM. These sections of the
character ROM are mapped to two Special Function Registers: TXT22 and TXT12. Character ROM address 09FEH is
mapped to SFR TXT22 as shown in Table . Character ROM address 09FFH is mapped to SFR TXT12 as shown in
Table .
Table 6 Character ROM - TXT22 mapping
U = used; X = reserved
MAPPED ITEMS 11 10
9
8
7
6
5
4
3
2
1
0
Character ROM
address 09FEH
X
X
X
X
X
X
X
U
U
U
U
X
Mapped to TXT22
−
−
−
−
7
6
5
4
3
2
1
0
Table 7 Description of Character ROM address 09FEH bits
BIT
0
1
2
3
4
5 to 11
FUNCTION
reserved; normally set to logic 1
1 = Text Acquisition available
0 = Text Acquisition not available
1 = Closed Caption Acquisition available
0 = Closed Caption Acquisition not available
1 = PWM0, PWM1, PWM2 and PWM3 output routed to Port 2.1 to Port 2.4 respectively
0 = PWM0, PWM1, PWM2 and PWM3 output routed to Port 3.0 to Port 3.3 respectively
1 = 10 page available
0 = 6 page available
reserved; normally set to logic 1
Table 8 Character ROM - TXT12 mapping
U = used; X = reserved
MAPPED ITEMS 11 10
9
8
7
6
5
4
3
2
1
0
Character ROM
address 09FFH
X
X
X
X
X
X
X
U
X
X
X
X
Mapped to TXT12
−
−
−
−
−
−
−
6
5
4
3
2
Table 9 Description of Character ROM address 09FFH bits
BIT
4
0 to 3, 5 to 11
1 = Spanish character set present
0 = no Spanish character set present
reserved; normally all set to logic 1
FUNCTION
2000 Feb 23
29
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