I think that the PegaDailyRollingFileAppender is Pega's override for the DailyRollingFileAppender.
Rather than asking what its parameters are, it will likely be easier for us to help if you let us know what you're trying to do. If your end goal now is the same as it was in your previous post, I think my answer from there is your best bet.
However, if you're simply curious about the parameters, just verify that for us and hopefully someone will be able to provide that information.
After looking into this a bit more, I believe that PegaDailyRollingFileAppender can take the following parameters: DatePattern, File, Append, BufferedIO, and BufferSize. That being said, I have only tried DatePattern, File, and Append.