Clock Solution Targets Pentium Mobile Computers

Sept. 1, 1998
A clock solution for Pentium and Pentium II class mobile computers, PI6C671 is a two PLL clock synthesizer that provides an IOAPIC and four 60/66 MHz selectable CPU clocks with their own power and ground pins to support 2.5V to 3.3V operation, seven

A clock solution for Pentium and Pentium II class mobile computers, PI6C671 is a two PLL clock synthesizer that provides an IOAPIC and four 60/66 MHz selectable CPU clocks with their own power and ground pins to support 2.5V to 3.3V operation, seven synchronous PCI clocks, eight low-skew SDRAM clocks, three reference clocks, and two selectable 24/28 MHz clocks to support USB and super I/O. System configuration is done by an I2C two-wire serial interface used to reduce circuit noise and power consumption. The I2C serial interface control lets programmers enable/disable each clock output driver, change CPU frequencies, and select 24 or 48 MHz outputs. Power-down is supported by selectable pin options, one for putting device in power-down mode by stopping the oscillator and both PLLs, or the CPU and PCI clocks can be stopped individually.

Company: PERICOM SEMICONDUCTOR CORP.

Product URL: Click here for more information

About the Author

Staff

Articles, galleries, and recent work by members of Electronic Design's editorial staff.

Sponsored Recommendations

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!