SAA5244A Datasheet, PDF (21/32 Pages) NXP Semiconductors – Integrated VIP and teletext decoder IVT1.1

Philips Semiconductors
Integrated VIP and teletext decoder
(IVT1.1)
Product specification
SAA5244A
R9 CURSOR ROW - auto increments to Register 10
R0 to R4
Active row for data written to or read from memory via the I²C-bus
A0
Selects display memory page (when = 0) or extension packet memory (when = 1)
CLEAR MEM.
When set to 1, clears the display memory.
This bit is automatically reset
SUPPL. BLAST
When set to 1, column 4b and 5b (of Table 6) are mapped into 4 and 5 respectively, replacing
blast-through alphanumerics in graphics mode
R10 CURSOR COLUMN - auto increments to Register 11 or 11B
C0 to C5
Active column for data written to or read from memory via the I²C-bus
SUPPL. ROW 0
When set to 1, column 4b and 5b (of Table 6) are mapped into columns 6 and 7 respectively,
just for row 0 columns 0 to 7
SUPPL. ROW 24
When set to 1, column 4b and 5b (of Table 6) are mapped into columns 6 and 7 respectively
just for row 24
R11 CURSOR DATA - does not auto increment
D0 to D6
Data read from/written to memory via I²C, at location pointed to by R9 and R10.
This location automatically increments each time R11 is accessed
R11B DEVICE STATUS - does not auto increment
VCS SIGNAL
QUALITY
TEXT SIGNAL
QUALITY
ROM VER R0 to
R4
625/525 SYNC
Indicates that the video signal quality is good and PLL is phase locked to input video when = 1
If a good teletext signal is being received when = 1
Indicated language/ROM variant. For Western European = 01000
If the input video is a 525 line signal when = 1
March 1992
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