Intel 6300ESB Datasheet page 59

I/o controller hub

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PCI Interface Signals (Sheet 3 of 3)

November 2007

Order Number: 300641-004US

PCI Lock: Indicates an exclusive bus operation and may require multiple

transactions to complete. The Intel

when it is doing non-exclusive transactions on PCI. PLOCK# is ignored

when PCI masters are granted the bus.

System Error: SERR# can be pulsed active by any PCI device that

detects a system error condition. Upon sampling SERR# active, the

6300ESB ICH can be programmed to generate an NMI or SMI#.

Implemented as I/O open drain. This allows the Intel

drive these signals due to internal sources.

PCI Power Management Event: Driven by PCI peripherals to wake the

system from low-power states S1-S5. If can also cause an SCI from the

S0 state. Note that in some cases the Intel

PME# active (low) due to an internal wake event. It will not drive PME#

high (but it may be pulled up using the internal pull-up resistor).

NOTE: PME# is in the Resume power plane and has an internal pull-up

NOTE: PME# is also used in the PCI-X segment.

6300ESB ICH ICH asserts PLOCK#

6300ESB ICH to

6300ESB ICH may drive

6300ESB I/O Controller Hub

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