SAB9077 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

SAB9077

Picture-In-Picture (PIP) controller

Philips Electronics 

Philips Semiconductors

Picture-In-Picture (PIP) controller

Preliminary specification

SAB9077H

FEATURES

Display

• 50/60 Hz PIP modes possible

• Twin PIP in interlaced mode at 8-bit resolution

• Sub-title mode features built in

• Large display fine positioning area, both channels

independent

• Only 2 Mbit needed as external VDRAM

(2 × 1 Mbit or 1 × 2 Mbit)

• Four 8-bit Analog-to-Digital Converters (ADCs; > 7-bit

performance) with clamp circuit

• Most PIP modes handle interlaced pictures without joint

line error

• Two PLLs which generate the line-locked clocks for the

acquisition channels

• Display PLL to generate line-locked clock for the display

• Three 8-bit Digital-to-Analog Converters (DACs)

• 4 : 1 : 1 data format

• Data reduction factors 1 to 1, 1 to 2, 1 to 3 and 1 to 4,

horizontal and vertical independent.

GENERAL DESCRIPTION

The SAB9077H is a picture-in-picture controller for

multi-standard TV-sets. The circuit contains ADCs,

reduction circuitry, memory control, display control and

DACs.

It inserts one or two live video signals with original or

reduced sizes into a live video signal. All video signals are

expected to be analog base band signals. The conversion

into the digital environment and back to the analog

environment is done on chip. Internal clocks are generated

by two acquisition PLLs and a display PLL.

The two PIP channels and a large external memory offer a

wide range of PIP modes. The emphasis is put on single

PIP, double PIP, split-screen mode and many multi-PIP

modes.

I2C-bus programmable

• Single and double PIP modes can be set

• Full field still mode available

• Several aspect ratios can be handled

• Reduction factors can be set freely

• Selection of vertical filtering type

• Freeze of live pictures

• Fine tuned display position, H (8-bit), V (8-bit),

both channels independent

• Fine tuned acquisition area, H (4-bit), V (8-bit),

both channels independent

• Eight main borders, sub-borders and background

colours available

• Border and background brightness adjustable, 30%,

50%, 70% and 100% IRE

• Several type of decoder input signals can be set.

1996 Aug 07

2

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