Bitstream Compression
When you generate a bitstream for Titanium Topaz FPGAs, the Efinity® software compresses the bitstream by default. This compression results in a bitstream size that is about half of the maximum size.
Refer to AN 033: Configuring Titanium FPGAs for the bitstream sizes.
Important: If you are using the Titanium or Topaz security features (AES-256 encryption
and/or asymmetric authentication), the software cannot compress the bitstream.
Therefore, compression is disabled when you use these features.