Chapter 1 Board Description and Memory Maps
MVME3100 Programmer’s Guide (V3100A/PG1)
15
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 1-12. PCI Bus C Status Register
REG
PCI Bus C Status Register - 0xE2000006
BIT
7
6
5
4
3
2
1
0
FIELD
RSVD
RSVD
RSVD
RSVD
PCI_C_6
4
B
PCIX_C
PCI_C_SPD
OPER
R
R
R
R
R
R
R
R
RESET
X
X
X
0
1
X
X
X