Xilinx PPC405 DCR Interface

Hello,

The DCR interface of the PPC405 operates in two ways, referred to as
mode 0 and mode 1. According to the
Xilinx PPC405 spec these modes can't be programmed, because they are
hardwired. So far I haven't found an
interface signal of the PPC405 or anything else, which allows me to
select either mode 0 or mode 1.
Maybe I missed one cruical information in the spec.

Many thanks for your help.

Robert