PI6C110E

Pericom PI6C110E integrates a dual PLL clock generator, SDRAM buffer and I2C interface. The clock generator section comprised of an oscillator, 2 low jitter phased locked loop, skew control, and power down logic. The PI6C110E SDRAM buffers are high speed and low skew to handle data transfers in excess of 133 MHz.

When Spread Spectrum mode of PI6C110E is enabled, all clock outputs are modulated except for REF and 48 MHz[0-1] outputs. These clocks are down spread linearly (triangular modulation) by +0%, -0.6%.

To minimize power consumption and EMI radiation some unused outputs can be turned off. Two wire I2C interface is used to enable/ disable Spread Spectrum mode, and to turned off PCI clocks, CPU clocks, and 48 MHz clocks.For low power sleep mode, the entire device can be placed to power down mode. Driving the PWR_DWN# to low state disables the entire chip. In this state the crystal oscillator, and both PLLs are turned off. Furthermore, all outputs are deactivated to low state, all inputs of PI6C110E are inactive except for PWR_DWN#.