User guide

80
M5000 Series: User Guide
Issued June 20, 2007
Universe IID Configuration Examples
B-1 General Information
Note – The 'Universe IID' PCI-VME Bridge, performs byte swapping of the data lanes on all
transactions between VMEbus and PCI bus. This is also the case for accesses to the
internal registers. The internal register bank is located on the 'PCI side' of the byte
swapping. This means that when registers are read or written from the VMEbus, all bytes
are shuffled (compared to the bit numbering used in the Universe IID User Manual).