SAA5246AP datasheet(4/50 Pages) PHILIPS

4 / 50 page

January 1993

Philips Semiconductors

Product speciﬁcation

Integrated VIP and Teletext (IVT1.0)

SAA5246A

PINNING

SYMBOL

DESCRIPTION

SOT240

SOT319

OSCOUT

27 MHz crystal oscillator output

OSCIN

27 MHz crystal oscillator input

OSCGND

0 V crystal oscillator ground

VSS

5, 14, 25

26, 30, 31,

43, 58

0 V ground

BLACK

video black level storage pin, connected to ground via a 100 nF capacitor

CVBS

composite video input pin. A positive-going 1 V (peak-to-peak) input is

required, connected via a 100 nF capacitor

IREF

reference current input pin, connected to ground via a 27 k

Ω resistor

VDD

1, 6, 10

25, 32, 38

+5 V positive supply

POL

STTV/LFB/FFB polarity selection pin

STTV/LFB

sync to TV output pin/line ﬂyback input pin. Function controlled by an

internal register bit (scan sync mode)

VCR/FFB

PLL time constant switch/ﬁeld input pin. Function controlled by an internal

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

RGBREF

input DC voltage to deﬁne the output high level on the RGB pins

BLAN

dot rate fast blanking output

COR

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

ODD/EVEN

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

SCL

serial clock input for I2C-bus. It can still be driven HIGH during power-down

of the device

SDA

serial data port for the I2C-bus. Open drain output. It can still be driven

HIGH during power-down of the device

D0-D5

26-31

60-64, 3

data ports for the page SRAM

n.c.

−

1, 2, 10, 11,

15, 18, 33,

34, 41, 46,

49 - 51, 59

not connected

D6-D7

32, 33

4, 5

data ports for the page SRAM

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