GENERAL DESCRIPTION

The SAB9076H is a picture-in-picture controller for NTSC TV-sets. The circuit contains ADCs, reduction circuitry, memory control, display control and DACs.

FEATURES

Display

? 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 required as external VDRAM

(2 × 1 Mbit or 1 × 2 Mbit)

? Four 8-bit Analogue 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 Analogue 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.

2C-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 selectable

? Border and background brightness adjustable, 30,

50, 70 and 100 IRE

? Several type of decoder input signals can be set.