SAA5281GP Philips Semiconductors, SAA5281GP Datasheet - Page 4

• Manufacturer Part Number: SAA5281GP
• Description: Integrated Video input processor and Teletext decoder IVT1.8
• Manufacturer: Philips Semiconductors

Philips Semiconductors
PINNING
1996 Nov 04
V
OSCOUT
OSCIN
OSCGND
V
REF+
BLACK
CVBS
IREF
V
POL
STTV/LFB
VCR/FFB
V
R
G
B
RGBREF
BLAN
COR
ODD/EVEN
(or DV)
Y
SCL
SDA
V
SYMBOL
DD1
SS1
DD2
SS2
SS3
Integrated Video input processor and
Teletext decoder (IVT1.8*)
SOT240-1 SOT247-1 SOT319-2
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
1
2
3
4
5
6
7
8
9
4 and 5
PIN
52
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
11
1
2
3
6
8
9
11
13
14
15
16
18
19
20
21
22
23
24
27
28
30
32
33
34
35
36
37
38
39
40
44
+5 V supply 1
27 MHz crystal oscillator output
27 MHz crystal oscillator input
0 V crystal oscillator ground
0 V ground
positive reference voltage for ADC; this pin should be connected
to ground via a 100 nF capacitor
video black level storage input/output; this pin should be
connected to ground via a 100 nF capacitor
composite video input; a positive-going 1 V (peak-to-peak) input
is required, connected via a 100 nF capacitor
reference current input, connected to ground via a 27 k resistor
+5 V supply 2
STTV/LFB/FFB polarity selection input
sync to TV output line flyback input; function controlled by an
internal register bit (scan sync mode)
PLL time constant switch/field input; function controlled by an
internal register bit (scan sync mode)
0 V ground; connected to V
dot rate character output of the RED colour information
dot rate character output of the GREEN colour information
dot rate character output of the BLUE colour information
input DC voltage to define the output high level on the RGB pins
dot rate fast blanking output
programmable output to provide contrast reduction of the TV
picture for mixed text and picture displays or when viewing
newsflash/subtitle pages;
open-drain output
in ODD/EVEN mode a 25 Hz output synchronized with the CVBS
input field sync pulses to produce a non-interlaced display by
adjustment of the vertical deflection currents; in DV mode a VPT
data valid signal is used to indicate reception of error-free VPS or
8/30 format 2 data
dot rate character output of teletext foreground colour information;
open-drain output
serial clock input for I
power-down of the device
serial data port for the I
driven HIGH during power-down of the device
0 V ground
4
2
C-bus; it can still be driven HIGH during
2
C-bus, open-drain output; it can still be
DESCRIPTION
SS1
for normal operation
Preliminary specification
SAA5281