saa5246a NXP Semiconductors, saa5246a Datasheet - Page 4

• Manufacturer Part Number: saa5246a
• Description: Integrated Vip And Teletext Ivt1.0
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PINNING
January 1993
OSCOUT
OSCIN
OSCGND
V
BLACK
CVBS
IREF
V
POL
STTV/LFB
VCR/FFB
R
G
B
RGBREF
BLAN
COR
ODD/EVEN
Y
SCL
SDA
D0-D5
n.c.
D6-D7
SYMBOL
SS
DD
Integrated VIP and Teletext (IVT1.0)
5, 14, 25
SOT240
1, 6, 10
32, 33
26-31
12
13
15
16
17
18
19
20
21
22
23
24
11
2
3
4
7
8
9
PIN
1, 2, 10, 11,
49 - 51, 59
26, 30, 31,
15, 18, 33,
34, 41, 46,
25, 32, 38
SOT319
60-64, 3
43, 58
4, 5
27
28
29
35
36
37
39
40
42
44
45
47
48
52
53
54
55
56
57
27 MHz crystal oscillator output
27 MHz crystal oscillator input
0 V crystal oscillator ground
0 V ground
video black level storage pin, connected to ground via a 100 nF capacitor
composite video input pin. A positive-going 1 V (peak-to-peak) input is
required, connected via a 100 nF capacitor
reference current input pin, connected to ground via a 27 k resistor
STTV/LFB/FFB polarity selection pin
sync to TV output pin/line flyback input pin. Function controlled by an
internal register bit (scan sync mode)
PLL time constant switch/field input pin. Function controlled by an internal
register bit (scan sync mode)
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
a 25 Hz output synchronized to the input CVBS field sync pulses to make a
non-interlaced display by adjustment of the vertical deflection currents.
dot rate character output of teletext foreground colour information.
Open-drain output
serial clock input for I
of the device
serial data port for the I
HIGH during power-down of the device
data ports for the page SRAM
not connected
data ports for the page SRAM
5 V positive supply
4
2
C-bus. It can still be driven HIGH during power-down
2
C-bus. Open drain output. It can still be driven
DESCRIPTION
Product specification
SAA5246A