Registers
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2
PRKx Parking. This field is used by the PCI Arbiter to establis h
a particular bus parking scheme. The encoding of this
field is shown in the following table.
HIERx Hierarchy. This field is used by the PCI Arbiter to
establish a particular priority ordering when using a fixed
or mixed mode priority scheme. When using the fixed
priority scheme, the encoding of this field is shown in the
table below.
PRK Parking Scheme
0000 Park on last master
0001 Park always on PARB6
0010 Park always on PARB5
0011 Park always on PARB4
0100 Park always on PARB3
0101 Park always on PARB2
0110 Park always on PARB1
0111 Park always on PARB0
1000 Park always on HAWK
1111 None
HIER Priority ordering, highest to lowest
000 PARB6 -> PARB5 -> PARB4 -> PARB3 -> PARB2 -> PARB1 -> PARB0 -> HAWK
001 HAWK -> PARB6 -> PARB5 -> PARB4 -> PARB3 -> PARB2 -> PARB1 -> PARB0
010 PARB0 -> HAWK -> PARB6 -> PARB5 -> PARB4 -> PARB3 -> PARB2 -> PARB1
011 PARB1 -> PARB0 -> HAWK -> PARB6 -> PARB5 -> PARB4 -> PARB3 -> PARB2
100 PARB2 -> PARB1 -> PARB0 -> HAWK -> PARB6 -> PARB5 -> PARB4 -> PARB3
101 PARB3 -> PARB2 -> PARB1 -> PARB0 -> HAWK -> PARB6 -> PARB5 -> PARB4
110 PARB4 -> PARB3 -> PARB2 -> PARB1 -> PARB0 -> HAWK -> PARB6 -> PARB5
111 PARB5 -> PARB4 -> PARB3 -> PARB2 -> PARB1 -> PARB0 -> HAWK -> PARB6