Artesyn MVME3100 Single Board Computer Installation and Use (June 2014) - Manual (Page 115)

Memory Maps
MVME3100 Single Board Computer Installation and Use (6806800M28E) 115
3.3V_VIO: 3.3V VIO enabled. This bit set indicates that the PMC bus (PCI bus B) is configured
to 3.3V VIO.
PCI_C_SPD:
PCI bus C speed. Indicates the frequency of PCI bus C.
00: 33 MHz
01: 66 MHz
10: 100 MHz
11: 133 MHz
PCIX_C: PCI-X bus C. A set condition indicates that bus C is operating in
PCI-X mode. A cleared condition indicates PCI mode.
PCI_C_64B: PCI bus C 64-bit. A set condition indicates that bus C is enabled to operate in 64-
bit mode. A cleared condition indicates 32-bit mode.
RSVD: Reserved for future implementation.
Table 6-10 PCI Bus C Status Register
REG PCI Bus C Status Register - 0xE2000006
BIT 7 6 5 4 3 2 1 0
FIELD
RS
V
D
RS
V
D
RS
V
D
RS
V
D
PCI_C_64B PCIX_C PCI_C_S
PD
OPER R R R R R R R R
RESET X X X 0 1 X X X