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CompuLab Ltd. IPC2 – Hardware Specification Page 25 of 83

3.5 System Clocks

The PCH provides a complete system clocking solution through Integrated Clocking. PCH based

platforms require several single-ended and differential clocks to synchronize signal operation and

data propagation system-wide between interfaces and across clock domains. In Integrated Clock

mode, all the system clocks will be provided by PCH from a 24 MHz crystal generated clock input.

The output signals from PCH are:

 6x 100 MHz differential sources for PCI Express* 2.0 devices

 1x 100 MHz differential clock for XDP/ITP

 2x 24 MHz single-ended sources for other LPC devices

Table 13 – PCH Clock Input

Table 14 – PCH Clock Outputs

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CompuLab IPC2 Especificaciones Pagina 25