Processor accepts analog A/V signals for DTV, STBs

Toshiba America Electronic Components Inc. (TAEC) announced the TB1311AFG analog video front-end processor. The new device is a programmable A/V and component switch that accepts standard analog audio and video signals required for DTV, set-top boxes and other A/V products.

"Previously, Toshiba offered A/V switches and component switches as separate products," said David Cruikshank, business development manager for digital consumer products in the ASSP Business Unit at TAEC. "The TB1311AFG's programmable A/V switching block, real-time format detector and automatic sync processor reduce board real estate, engineering time and product cost to realize a high-performance analog interface design."

Among the device's features are the programmable audio (L/R) block that can accept up to 10 inputs and three outputs, and the programmable video block that can accept composite, S-video, component, RGB and SCART signals and output up to 2 video signals plus a monitor. Other important features include an automatic sync processor, a real-time format detector that supports the display of high-resolution component video, and a no signal input detector that activates a dummy HD/VD signal output to stabilize the TV picture output.

The product provides a programmable video switch that can be configured to provide the quantity and type of video inputs needed for end-product designs. It offers a pre-filter for the ADC (4.5MHz to 46MHz variable) that is said to reduce aliasing noise from A/D conversion. The TB1311AFG is said to provide real-time format detection for various video inputs including HDTV and computer-video resolutions, and supports I²C bus control.

The TB1311AFG is housed in lead-free QFP80 packaging, and is in volume production. The product is priced at $5 each in 10,000-piece quantities.