參數資料
型號: SAA5532PS/NNNN
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP52
封裝: 0.600 INCH, PLASTIC, SDIP-52
文件頁數: 23/100頁
文件大?。?/td> 412K
代理商: SAA5532PS/NNNN
2000 Feb 23
29
Philips Semiconductors
Preliminary specication
Enhanced TV microcontrollers with
On-Screen Display (OSD)
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
Table 7
Description of Character ROM address 09FEH bits
Table 8
Character ROM - TXT12 mapping
U = used; X = reserved
Table 9
Description of Character ROM address 09FFH bits
MAPPED ITEMS
11
10
9
8
7
6
5
4
3
2
1
0
Character ROM
address 09FEH
XXXXXXX
U
X
Mapped to TXT22
76543210
BIT
FUNCTION
0
reserved; normally set to logic 1
1
1 = Text Acquisition available
0 = Text Acquisition not available
2
1 = Closed Caption Acquisition available
0 = Closed Caption Acquisition not available
3
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
4
1 = 10 page available
0 = 6 page available
5 to 11
reserved; normally set to logic 1
MAPPED ITEMS
11
10
9
8
7
6
5
4
3
2
1
0
Character ROM
address 09FFH
XXXXXXX
U
X
XXX
Mapped to TXT12
65432
BIT
FUNCTION
4
1 = Spanish character set present
0 = no Spanish character set present
0 to 3, 5 to 11
reserved; normally all set to logic 1
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