Pci Bus Status Registers; Table 1-10. Pci Bus A Status Register - Motorola MVME3100 Programmer's Manual

PCI Bus Status Registers

The PCI Bus Status registers provide PCI bus configuration information for each of the PCI buses.

Table 1-10. PCI Bus A Status Register

REG
BIT
FIELD
OPER
RESET
PCI_A_SPD
PCI bus A speed. Indicates the frequency of PCI bus A.
00: 33 MHz
01: 66 MHz
10: 100 MHz
11: 133 MHz
PCIX_A
PCI-X bus A. A set condition indicates that bus A is operating in
PCI-X mode. A cleared condition indicates PCI mode.
PCI_A_64B
PCI bus A 64-bit. A set condition indicates that bus A is enabled to operate in 64-bit mode. A cleared
condition indicates 32-bit mode.
RSVD
Reserved for future implementation.
PCI Bus A Status Register - 0xE2000004
7 6 5 4
R R R R
0 0 0 0
Chapter 1 Board Description and Memory Maps
3 2 1 0
R R R R
1 X 0 1
MVME3100 Programmer's Guide (V3100A/PG1)
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