Artesyn MVME3100 Single Board Computer Installation and Use (June 2014) - Manual (Page 113)

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MVME3100 Single Board Computer Installation and Use (6806800M28E) 113
RSVD: Reserved for future implementation.
6.1.9 PCI Bus Status Registers
The PCI Bus Status registers provide PCI bus configuration information for each of the PCI
buses.
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.
Table 6-8 PCI Bus A Status Register
REG PCI Bus A Status Register - 0xE2000004
BIT 7 6 5 4 3 2 1 0
FIELD
RS
V
D
RS
V
D
RS
V
D
RS
V
D
PCI_A_64B PCIX_A PCI_A_S
PD
OPER R R R R R R R R
RESET 0 0 0 0 1 X 0 1
Table 6-9 PCI Bus B Status Register
REG PCI Bus B Status Register - 0xE2000005
BIT 7 6 5 4 3 2 1 0