SIO10N268 Datasheet, PDF(27/251 Page) SMSC Corporation – Advenced Notebook I/O for ISA or LPC Designs with X-Bus Interface for I/O, Memory, and FWH Emulation and Four Srial Ports

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SIO10N268 Datasheet, PDF (27/251 Pages) SMSC Corporation – Advenced Notebook I/O for ISA or LPC Designs with X-Bus Interface for I/O, Memory, and FWH Emulation and Four Srial Ports

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Advanced Notebook I/O for ISA or LPC Designs

Datasheet

Note 4.18 This buffer type is different from the buffer types shown per function because it is a mode dependent pin

that supports alternate âmode dependentâ functions that require additional buffer types.

Note 4.19

The PCI Clock is considered part of the LPC Interface when the device is configured for LPC Mode and it

is also considered part of the ISA Interface when the device is configured for ISA Mode. In LPC Mode,

the PCI Clock must always be driven by the 33MHz PCI Clock source. In ISA Mode, the PCI Clock is

used to support serial IRQs. If serial IRQs are not supported then the PCI Clock input may be connected

to the 33MHz PCI Clock or the 14MHz clock source.

SMSC SIO10N268

Page 27

DATASHEET

Rev. 0.5 (03-24-05)

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