SAB9075H 查看數據表（PDF） - Philips Electronics

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SAB9075H

Picture-in-Picture (PIP) controller for NTSC

Philips Electronics 

Philips Semiconductors

Picture-in-Picture (PIP) controller for NTSC

Preliminary specification

SAB9075H

FEATURES

Display

• One or two live pictures can be displayed

simultaneously

• Wide range of multi-Picture-In-Picture (PIP) modes

available

• Six 6-bit Analog-to-Digital Converters (ADC) with

clamping circuit

• Enhanced vertical resolution at most modes for live

pictures

• Two Phase-Locked-Loops (PLL) with Voltage

Controlled Oscillator (VCO) to generate the line-locked

clocks

• Three 7-bit Digital-to-Analog Converters (DAC)

• 4 : 1 : 1 data format

• Data reduction factors 1 to 4, 1 to 9 and 1 to 16.

I2C-bus programmable

• Different single, double and multi-PIP modes can be set

• Several aspect ratios can be handled

• Reduction factors can be set automatically and

manually

• Selection of vertical filtering type

• Freeze of live pictures

• Single-PIP display position, four corners on-screen

• Multi-PIP display position, left or right on-screen

• Fine tuned display position, H (6-bit), V (6-bit)

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

• Channel-border and live PIP selectable

• Eight main-border, sub-border, channel-border and

background colours selectable

• Border and background brightness adjustable, 30%,

50%, 70% and 100% IRE

• Several types of decoder input signals can be set

• 6-bit HUE and SAT signals (0 to 5 V) adjustable by

I2C-bus

• Main and sub-audio mute controllable by I2C-bus.

GENERAL DESCRIPTION

The SAB9075H is a picture-in-picture controller for the

NTSC environment in combination with the Integrated

NTSC decoder and sync processor TDA8315.

The device inserts one or two live video channels with

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

expected to be analog baseband signals. The conversion

into the digital environment and back to the analog

environment is carried out on-chip. Internal clocks are

generated by two PLLs.

Due to the two PIP channels and a large external memory,

a wide range of PIP modes are offered. The emphasis is

put on double-PIP and multi-PIP modes. In combination

with the different border colours and some external

software the IC concept can be used as an excellent

channel selection tool.

Some of the I2C-bus registers are for controlling the

saturation and HUE of the colours. There are also outputs

for the mute function of main and sub-channel.

February 1995

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