TVME8240 User Manual Issue 1.2.9
Page 13 of 70
2.3.1 PCI Arbiter Assignment
The TVME8240 uses the MPC8240 integrated PCI arbiter for arbitration of PCI devices.
The MPC8240 integrated PCI arbiter provides PCI arbitration for the MPC8240 itself and up to five
external PCI Masters.
The TVME8240 uses the following PCI arbiter assignment for the various PCI devices.
PCI Arbiter
GNT/REQ Line
PCI Device
0
Universe-II (VME PCI Bridge)
1
21143 (LAN Controller)
2 SYM53C875
(SCSI
Controller)
3
PCI Expansion (e.g. PMC-span)
4 N/A
Table 2-1 : PCI Arbiter Assignment
2.3.2 PCI IDSEL Assignment
The MPC8240 CPU provides capability for generating PCI configuration cycles.
The TVME8240 uses the following IDSEL assignment for the various on board PCI devices.
Device Number
Address Line
PCI Device
0d13 = 0b0_1101
AD13
Universe-II (VME PCI Bridge)
0d14 = 0b0_1110
AD14
21143 (LAN Controller)
0d15 = 0b0_1111
AD15
SYM53C875 (SCSI Controller)
0d16 = 0b1_0000
AD16
PCI9030 (PCI Target Chip)
Table 2-2 : PCI IDSEL Assignment
