VITERBI Decoder for Digital TV

This product preview describes a high performance device, a Viterbi Decoder, for Digital-TV applications according to the EBU defined DVB transmission standard for satellite and cable Set-Top systems.

Viterbi Decoder - Capability Specification
• Operates at max. 50MBits/s output rate to work with all present DVB channels
• Implements K=7, (1718,1338) Viterbi decoder for rates 1/2, 2/3, 3/4, 5/6 and 7/8 with a survivor depth of 96
• Code rate and synchronization control programmable via I2C standard serial bus
• Automatic rate selection and signal quality output (qval)
• Full/empty flag generation of input FIFO for system monitoring of VDCLK/BITCLK ratio
• Simplified system design with internal PLL for the generation of output BITCLK from the incoming VDCLK for all depuncturing modes
• Available in a 128QFP package