SAA7158WP View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

SAA7158WP

Back END IC

Philips Electronics 

Philips Semiconductors

Back END IC

Preliminary specification

SAA7158

FEATURES

• Line Flicker Reduction (LFR) by means of MEDIAN filtering

• Vertical zoom

• Digital colour transient improvement

• Digital luminance peaking

• Movie phase detection

• 4:4:4 YUV data throughput selectable, standard is 4:1:1 Y/U/V

• D/A conversion

• UART interface.

GENERAL DESCRIPTION

Application Environment

The Back END IC (abbreviated as BENDIC) is designed to cooperate with an 8051 type of microprocessor, the ECO3

(SAA4951) memory controller and Texas Instruments TMS4C2970 memories, but other configurations may be

applicable. Fig.1 shows the block diagram of the feature box. The nominal clock frequency of the IC is 27 MHz or 32 MHz,

with a maximum of 36 MHz.

The system supports the digital Y/U/V bus for selection of different video signal sources. The Y/U/V bus and the BENDIC

data input are fully synchronous with respect to the clock signal. A line reference signal BLN for timing control purposes

has to be provided by external elements which always controls the system timing, independent of active signal sources

or desired functions.

Analog Characteristics

The BENDIC contains 3 independent, high speed digital to analog converters for luminance and colour difference signal

processing and conversion. The resolution of the two DA converters for the colour difference signals is 8 bit. The

luminance peaking up to 6 dB at high frequencies widens the resolution of the luminance channel. To avoid aliasing

effects due to time discrete amplitude limiting the resolution of 9-bit is offered for the luminance conversion. All output

stages provide high performance output stages for driving lines with low impedance line termination.

QUICK REFERENCE DATA

SYMBOL

VDD

Tamb

PARAMETER

digital supply voltage

analog supply voltage

operating ambient temperature

MIN.

4.5

4.75

0

MAX.

5.5

5.25

+70

UNIT

V

V

°C

ORDERING INFORMATION

EXTENDED

TYPE NUMBER

SAA7158WP

PINS

68

Note

1. SOT188-2; 1996 November 26.

PIN POSITION

PLCC

PACKAGE

MATERIAL

plastic

CODE

SOT188(1)

July 1994

2

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