SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
The MUX block generates the proper outputs based whether the design is in standard Deinterlacer modes (interpolated inputs from the EDI), Film Mode Deinterlacer mode (direct inputs) or progressive bypass mode. The following diagram shows this data path:
When in Film Mode (VPE_DEI_REG10[1] FMD_LOCK = '1'), the output of the DEI depends only on the input field sequences. Depending on the Jam Direction , either the previous or next field data is output. If not in Film Mode, the interpolated result from the EDI is output.
Because the DEI produces the missing line in an interlaced frame, what this part of the data path is selecting is the “interpolated” line. The other line output is the current line. Together, the interpolated line and the current line form the actual output of the main part of the DEI data path. Depending on if the current field is a top field or bottom field (as selected by Field ID), the output “top” of the MUX is either the current or interpolated lines, and the output “bot” is the opposite.