TDA9141 datasheet(2/25 Pages) PHILIPS

2 / 25 page

December 1992

Philips Semiconductors

Product speciﬁcation

PAL/NTSC/SECAM decoder/sync processor

TDA9141

FEATURES

• Multistandard PAL, NTSC and SECAM

• I2C-bus controlled

• I2C-bus addresses can be selected by hardware

• Alignment free

• Few external components

• Designed for use with baseband delay lines

• Integrated video filters

• CVBS or YC input with automatic detection

• CVBS output

• Vertical divider system

• Two-level sandcastle signal

• VA synchronization pulse (3-state)

• HA synchronization pulse or clamping pulse CLP

input/output

• Line-locked clock output or stand-alone I2C-bus output

port

• Stand-alone I2C-bus input/output port

• Colour matrix and fast YUV switch

• Comb filter enable input/output with subcarrier

frequency.

GENERAL DESCRIPTION

The TDA9141 is an I2C-bus controlled, alignment-free

PAL/NTSC/SECAM decoder/sync processor. The

TDA9141 has been designed for use with baseband

chrominance delay lines, and has a combined subcarrier

frequency/comb filter enable signal for communication

with a PAL comb filter.

The IC can process CVBS signals and Y/C input signals.

The input signal is available on an output pin, in the event

of a Y/C signal, it is added into a CVBS signal.

The sync processor provides a two-level sandcastle, a

horizontal pulse (CLP or HA pulse, bus selectable) and a

vertical (VA) pulse. When the HA pulse is selected a

line-locked clock (LLC) signal is available at the output port

pin.

A fast switch can select either the internal Y signal with the

UV input signals, or YUV signals made of the RGB input

signals. The RGB input signals can be clamped with either

the internal or an external clamping signal (search tuning

mode).

Two pins with an input/output port and an output port of the

I2C-bus are available.

The I2C-bus address of the TDA9141 is hardware

programmable.

ORDERING INFORMATION

Note

1. SOT232-1; 1996 December 4.

EXTENDED TYPE

NUMBER

PACKAGE

PINS

PIN POSITION

MATERIAL

CODE

TDA9141

SDIL

plastic

SOT232(1)

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