SAA5281ZP PHILIPS [NXP Semiconductors], SAA5281ZP Datasheet - Page 23

• Manufacturer Part Number: SAA5281ZP
• Description: Integrated Video input processor and Teletext decoder IVT1.8
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
1996 Nov 04
R4 DISPLAY CHAPTER - auto-increments to Register 5
A0 to A2
FREEZE HEADER ONLY
R5 NORMAL DISPLAY CONTROL - auto-increments to Register 6
R6 NEWSFLASH/SUBTITLE DISPLAY CONTROL - auto-increments to Register 7; note 1
PON
TEXT
COR
BKGND
R7 DISPLAY MODE - does not auto-increment
BOX ON 0
BOX ON 1 to 23
BOX ON 24
SINGLE/DOUBLE HEIGHT
TOP/BTM HALF
CONCEAL/REVEAL ON
CURSOR ON
STATUS BTM/TOP
R8 ACTIVE CHAPTER - auto-increments to Register 9
A0 to A2
CLEAR MEM
VPS ENABLE
R9 CURSOR ROW - auto-increments to Register 10
R0 to R4
R10 CURSOR COLUMN - auto-increments to Register 11 or 11B
C0 to C5
R11 CURSOR DATA - does not auto-increment
D0 to D7
R11B DEVICE STATUS - does not auto-increment
VCS SIGNAL QUALITY
TEXT SIGNAL QUALITY
ROM VER R0 to R4
625/525 SYNC
R12 ADVANCED CONTROL 2A - does not auto-increment
S0 to S3, H0 to H3
Integrated Video input processor and
Teletext decoder (IVT1.8*)
REGISTER BIT D0 TO D7
Selects one of 8 display chapters.
Freezes the rolling header, but (unlike R0D4) allows the time to roll.
Picture on.
Text on.
Contrast reduction on.
Background colour on.
Boxing function allowed on Row 0.
Boxing function allowed on Rows1 to 23.
Boxing function allowed on Row 24.
To display double height text.
To select bottom half of page when DOUBLE HEIGHT is logic 1.
To reveal concealed text.
To display cursor.
Row 25 displayed above or below the main text.
Active chapter for data written to or read from memory via the I
When set to logic 1, clears the display memory. This bit is automatically reset.
VPS acquisition enabled when logic 1.
Active row for data written to or read from memory via the I
Active column for data written to or read from memory via the I
Data read from/written to memory via I
R10. This location automatically increments each time R11 is accessed.
Indicates that the video signal quality is good and PLL is phase-locked to input
video when logic 1.
If a good teletext signal is being received then logic 1.
Indicated language/ROM variant. For Western European is logic 0. R3 and R4 are
set HIGH if R13 D6 is logic 1.
If the input video is a 525 line signal then logic 1.
Each acquisition channel can be programmed to process its page in one of four
ways as shown in Table 12.
23
FUNCTION
2
C-bus, at location pointed to by R9 and
2
Preliminary specification
C-bus.
2
2
C-bus.
C-bus.
SAA5281