saa5290ps NXP Semiconductors, saa5290ps Datasheet - Page 23
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saa5290ps
Manufacturer Part Number
saa5290ps
Description
Economy Teletext And Tv Microcontrollers
Manufacturer
NXP Semiconductors
Datasheet
1.SAA5290PS.pdf
(72 pages)
- Current page: 23 of 72
- Download datasheet (499Kb)
Philips Semiconductors
1998 Dec 14
Teletext Register 0 (TXT0) - WRITE only
X24 POSN
DISPLAY X24
AUTO FRAME
DISABLE HDR
ROLL
DISPLAY STATUS
ROW ONLY
DISABLE FRAME
VPS ON
INV ON
Teletext Register 1 (TXT1) - WRITE only
EXT PKT OFF
8-BIT
ACQ OFF
X26 OFF
FULL FIELD
FIELD POLARITY
H POLARITY
V POLARITY
Teletext Register 2 (TXT2) - WRITE only
REQ3 to REQ0
SC2 to SC0
Teletext Register 3 (TXT3) - WRITE only
PRD4 to PRD0
Teletext Register 4 (TXT4) - WRITE only
OSD BANK
ENABLE
QUAD WIDTH
ENABLE
EAST/ WEST
DISABLE DBL
HGHT
B MESH ENABLE
C MESH ENABLE
TRANS ENABLE
SHADOW ENABLE
Economy teletext and TV microcontrollers
REGISTER
(3)
(4)
(4)
(3)
(3)
store packet 24 in extension packet memory (logic 0) or page memory (logic 1)
display X24 from page memory (logic 0) or extension packet memory (logic 1)
FRAME output switched off automatically if any video displayed (logic 1)
disable writing of rolling headers and time into memory (logic 1)
display row 24 only (logic 1)
FRAME output always LOW (logic 1)
enable capture of VPS data (logic 1)
enable capture of inventory page in block 8 (logic 1)
disable decoding of extension packets (logic 1)
data in packets 0 to 24 written into memory without error checking (logic 1)
prevent teletext acquisition section writing to memory (logic 1)
disable automatic processing of packet 26 data (logic 1)
decode teletext on VBI lines only (logic 0) or decode teletext on any line (logic 1)
VSYNC in first half of the line (logic 0) or second half of the line (logic 1) at start of even field
HSYNC input positive-going (logic 0) or negative-going (logic 1)
VSYNC input positive-going (logic 0) or negative-going (logic 1)
selects which page is modified by TXT3 page request data
start column at which page request data written to TXT3, page request data is placed
page request data
bank switching of OSD enabled (logic 1)
enable quad width characters (logic 1)
western languages selected (logic 0) or Eastern languages selected (logic 1)
disable display of double height teletext control codes (logic 1) in OSD boxes
enable meshing of area with black background (logic 1)
enable meshing of area with other background colours (logic 1)
set black background to transparent i.e. video is displayed (logic 1)
enable south-east shadowing (logic 1)
23
FUNCTION
SAA5x9x family
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