GENERAL DESCRIPTION

The SAA4956TJ is a 2949264-bit field memory with an optional field based noise reduction designed for advanced TV applications such as 100/120 Hz TV, PALplus, PIP and 3D comb filter. The SAA4956TJ is functional and pin compatible with the SAA4955TJ.

FEATURES

• 2949264-bit field memory with optional field based noise reduction

• 245772 × 12-bit organization

• 3.3 V power supply

• Inputs fully TTL compatible when using an extra 5 V power supply

• High speed read and write operations

• FIFO operations:

– Full word continuous read and write

– Independent read and write pointers (asynchronous read and write access)

– Resettable read and write pointers.

• Optional field based noise reduction activated by an enable pin and controlled via the I2C-bus

• Optional random access by block function (40 words per block) enabled during pointer reset operation

• Quasi static (internal self-refresh and clocking pauses of infinite length)

• Write mask function

• Cascade operation possible

• Compatible with SAA4955TJ

• 16-Mbit CMOS DRAM process technology

• 40-pin SOJ package.