Specifications

CompuLab Ltd. IPC2 – Hardware Specification Page 27 of 83
Table 16 provides a basic description of the available spread modulators. The spread modulators
each operate on the XCK PLL’s 2.7 GHz outputs. Spread Spectrum tuning and adjustment can be
made on the fly without a platform reboot using specific programming sequence to the clock
registers.
Table 16 – Modulator Block
3.5.2 Clock Configuration Access Overview
The PCH provides increased flexibility of host equivalent configurability of clocks, using Intel ME
FW. In the Intel ME FW assisted configuration mode, Control settings for PLLs, Spread Modulators
and other clock configuration registers will be handled by the Intel ME engine. The parameters to
be loaded will reside in the Intel ME data region of the SPI Flash device. BIOS would only have
access to the register set through a set of Intel MEI commands to the Intel ME.