Embedded Solutions
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PMC_XM_USER_SWITCH
[0x0004] User Switch Port (read only)
Dip-Switch Port
Data Bit
Description
31-16
Spare
15-8
Xilinx Design Revision Number
7-0
Sw7-0
FIGURE 4
PMC-XM SPARTAN3 USER SWITCH PORT
Sw7-0: The user switch is read through this read-only port. The bits are read as the
lowest byte. Access the port as a long word and mask off the undefined bits. The dip-
switch positions are defined in the silkscreen. For example the switch figure below
indicates a 0x12.
Xilinx design revision number: The value of the second byte of this port is the rev.
number of the Xilinx design (currently 0x05 - rev. E).
1
7
0
0