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.