Read multiple sectors in PIO mode with CF cards

I tried to get some specs about max number of sectors for Read Multiple command, by newer Sandisk CF cards. But don’t see it in available data sheets. By older cards it was usually 1. My CF card Sandisk Ultra II, 2 GB some 4 years old can max 4 sectors by Read Multiple, but I need more.

Some hints, please.  Any max number specs for new Ultra (30MB/sec) cards ?