TMC2081

The TMC2081 is a Digital Video Mixer that performs M = (a ) V1 + ( 1-a ) V2 (for 0    a   1) cross-fading at speeds faster than 40 Mpps proportionally controlled by a 9-bit a-channel input. Variable rate dissolves and fades may be implementedwith unity gain at the a endpoints.

With the a-Look-Up Table (aLUT) of the TMC2081, mixing may be controlled by a single bit of the a-channel input. Setup is via a microprocessor interface. Supported video formats are 24-bit GBR, YCBCR444, and 16-bit YCBCR422 component video. Dissimilar pixel formats may be mixed using on-chip interpolation and decimation filters and GBR/YCBCR and YCBCR/GBR color-space conversion matrices.

An additional format accepted by the A-channel is 8-bit color-indexed pixel data which addresses three bypassable 256 x 8 color look-up tables (CLUTs). A 15 color overlay palette and a 24-bit fill register are also included.Digital and Analog outputs may be programmed to view either mixer inputs, V1 or V2 or mixer output, M.Packaged in a 128-lead plastic metric quad flat-pack (MQFP), the TMC2081 is fabricated with a sub-micron CMOS process. Performance is guaranteed over the commercial,0 to 70 temperature range.