參數(shù)資料
型號： SAA5X9X
廠商： NXP Semiconductors N.V.
英文描述： Economy teletext and TV microcontrollers
中文描述： 經(jīng)濟(jì)圖文電視和電視微控制器
文件頁數(shù)： 23/68頁
文件大?。?/td> 612K
代理商： SAA5X9X
1997 Jul 07
23
Philips Semiconductors
Preliminary specification
Economy teletext and TV microcontrollers
SAA5x9x family
Teletext Register 5 (TXT5) - WRITE only
BKGND OUT
BKGND IN
COR OUT
COR IN
TEXT OUT
TEXT IN
PICTURE ON OUT
PICTURE ON IN
background colour displayed outside teletext boxes (logic 1)
background colour displayed inside teletext boxes (logic 1)
COR output active outside teletext boxes (logic 1)
COR output active inside teletext boxes (logic 1)
text displayed outside teletext boxes (logic 1)
text displayed inside teletext boxes (logic 1)
video picture displayed outside teletext boxes (logic 1)
video picture displayed inside teletext boxes (logic 1)
Teletext Register 6 (TXT6) - WRITE only
See TXT5
this register has the same meaning as TXT5 but is only invoked if either newsflash (C5) or
subtitle (C6) bit in row 25 of the basic page memory is set
Teletext Register 7 (TXT7) - WRITE only
STATUS ROW TOP
CURSOR ON
REVEAL
TOP/BOTTOM
DOUBLE HEIGHT
BOX ON 24
BOX ON 1-23
BOX ON 0
display row 24 below (logic 0) or above (logic 1) teletext page
display cursor at location pointed to by TXT9 and TXT10 (logic 1)
display characters in areas with the conceal attribute set (logic 1)
display rows 0 to 11 (logic 0) or 12 to 23 (logic 1) when the double height bit is set
display each character as twice normal height (logic 1)
enable teletext boxes in memory row 24 (logic 1)
enable teletext boxes in memory rows 1 to 23 (logic 1)
enable teletext boxes in memory row 0 (logic 1)
Teletext Register 8 (TXT8)
I
2
C SELECT
(2)
IDS ENABLE
(2)
DISABLE
SPANISH
(2)
PKT 26 RECEIVED
WSS RECEIVED
(5)
WSS ON
(5)
CVBS0/CVBS1
select bit I
2
C-bus (logic 0) or byte I
2
C-bus (logic 1)
capture teletext Independent Date Services (logic 1)
disable special treatment of Spanish packet 26 decoding
set to logic 1 when packet 26 teletext data processed
set to logic 1 when wide screen signalling data received
enable acquisition of wide screen signalling data
select CVBS0 (logic 0) or CVBS1 (logic 1) input to the device
Teletext Register 9 (TXT9) - WRITE only
CURSOR FREEZE
CLEAR MEMORY
A0
locks current cursor position (logic 1)
write 20H into every location in teletext memory (logic 1)
TXT11 accesses the basic page memory, selected by TXT15 on the 10 page device, (logic 0)
or extension packet memory (logic 1)
memory row to be accessed by TXT11
R4 to R0
REGISTER
FUNCTION
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