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PMC/PCI INTERFACE
PMC Module Installation
10004281-02 CC1000dm User’s Manual 3-5
to…
1001 PCI 6254 has highest priority
1010- 1111 re se rv ed
BPC:
Bus Parking Control
This controls the bus grant behavior during idle.
0000 Last master granted is parked (default)
0001 Master #0 is parked
to…
1001 Master #8 is parked
1010 PCI 6254 is parked
Others Grant is deasserted
The secondary arbiter implements a programmable two-level rotating algorithm
whereby the priorities are re-evaluated at the start of each new transaction on the sec-
ondary PCI bus. From this point until the time the next transactions starts, the arbiter
will assert grants corresponding to the highest priority request asserted. The arbiter sup-
ports up to ten request/grant pairs. The request/grant assignments for the arbiter are
shown in the following table. For more detailed information regarding arbitration, refer
to the PLX PCI 6254 documentation listed in the Technical References
Table 1-2.
CC1000dm
Request/Grant Local PCI Bus Device:
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0PMC 1
1PMC 2
2 reserved
3 reserved
4 PMC 1 Alternate Device
5 PMC 2 Alternate Device
6 reserved
7 reserved
8 reserved
9 PCI 6254
Ta b l e 3 - 5 :
Request/Grant Assignments