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Customer Reference Board Manual 41
Intel® IQ80333 I/O Processor
Hardware Reference Section
3.9.6.4.3 S7A1-3: Configration Cycle Enable Corresponding to
Signal Name PBI_AD6
Configuration Cycle Enable or RETRY is latched at the de-asserting edge of P_RST# and it
determines when the Primary PCI interface disable PCI configuration cycles by signaling a Retry
until the Configuration Cycle Retry bit is cleared in the PCI Configuration and Status Register.
3.9.6.4.4 S7A1-4: PCI-X Bus B Speed Enable Corresponding to
Signal Name PBI_AD10
This switch allows the user to enables 133 MHz on PCI-X segment B.
3.9.6.4.5 S7A1-5: PCI-X Bus B Hot-Plug Reset Disable
Corresponding to Signal Name PBI_AD11
This switch allows the user to enables or disable Hot-Plug Reset on PCI-X segment B.
3.9.6.4.6 Switch S7A1- 6: Hot Plug Capable Disabled Corresponding to
Signal Name PBI_AD15
This switch allows the user to enable hot plug devices on the secondary PCI-X bus B.
Table 22. Switch S7A1-2: Reset IOP: Settings and Operation Mode
S7A1-2 Operation Mode
Open Don't hold in reset, enable IOP core (Default mode).
Closed Hold IOP core in reset.
Table 23. Switch S7A1-3: RETRY: Settings and Operation Mode
S7A1-3 Operation Mode
Open Configuration Retry Enabled. - use when booting in a host (Default mode).
Closed Configuration Retry Disabled.
Table 24. S7A1-4: PCI-X Bus B Speed Enable: Settings and Operation Mode
S7A1-4 Operation Mode
Open Enables 133 MHz on PCI-X bus B.
Closed Enables 100 MHz on PCI-X bus B (Default Mode).
Table 25. S7A1-5: PCI-X Bus B Hot-Plug Reset Disable: Settings and Operation Mode
S7A1-5 Operation Mode
Open PCI-X Bus B Hot-Plug Enable, normal reset mode disabled
Closed PCI-X Bus B Hot-Plug Disable, normal reset mode (Default Mode).
Table 26. Switch S7A1- 6: Hot Plug Capable Disabled: Settings and Operation Mode
S7A1-6 Operation Mode
Open Hot Plug on Bus B Enabled
Closed Disables Hot Plug on Bus B(Default mode)