saa5290ps NXP Semiconductors, saa5290ps Datasheet - Page 48

• Manufacturer Part Number: saa5290ps
• Description: Economy Teletext And Tv Microcontrollers
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9.21
The position of the display relative to the Hsync and Vsync
inputs can be varied over a limited range to allow for
optimum TV set-up.
The horizontal position is controlled by the X0 and X1 bits
in TXT16. Table 23 gives the time from the active edge of
the Hsync to the start of the display area for each setting
of X0 and X1.
Table 23 Display horizontal position
The line on which the display area starts depends on
whether the display is 625-line or 525-line and on the
setting of the Y0 to Y2 bits in TXT16. Table 24 gives the
first display line for each setting of Y0 to Y2, for both
625 and 525-line display.
On the other field, the display starts on the equivalent line.
Table 24 Display vertical position
1998 Dec 14
Economy teletext and TV microcontrollers
X1
Y2
0
0
1
1
0
0
0
0
1
1
1
1
Display position
X0
Y1
0
1
0
1
0
0
1
1
0
0
1
1
Y0
0
1
0
1
0
1
0
1
Hsync TO DISPLAY
FIRST LINE FOR DISPLAY
625-LINE
42
44
46
48
34
36
38
40
17.2
16.2
15.2
14.2
s)
525-LINE
28
30
32
34
20
22
24
26
48
SAA5x9x family
Preliminary specification