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Single-chip solution addresses timing, EMI reduction in notebook PCs

Posted: 27 Dec 2004 ?? ?Print Version ?Bookmark and Share

Keywords:cypress semiconductor? electromagnetic interference? smi? cy28442? peak reducing emi solutions?

Cypress Semiconductor Corp. has announced sample availability of a single-chip solution that addresses the timing and electromagnetic interference (EMI) reduction requirements of notebook PCs.

The new CY28442, which combines a frequency timing generator and a Peak Reducing EMI Solutions (PREMIS) spread-spectrum clock generator, meets intel's CK410m and CK-SSCD specifications and definitions for its low-power Alviso platform for notebook PCs.

Developed to meet the growing demands on system clocks as a result of faster processors, wide-screen displays, DVD burners and state-of-the-art graphics, Cypress has combined its high-performance reference clock that supports bus speeds up to 800MHz with high-performance EMI reduction technology to deliver best-in-class signal integrity and lowest frequency jitter in one package, said the company.

The CY28442 combines a system main clock generator that is designed to generate all frequency and timing signals with a spread-spectrum clock generator, which is a requirement for an Alviso-based notebook PC. The device supports all the timing requirements for the processor, memory controllers, graphics, USB, Serial ATA and PCI Express. It also integrates programmable spread-spectrum technology to help reduce EMI across the entire system. It also enables designers to select multiple combinations of processor frequency and spread-spectrum clocking features through the I2C programmable interface.

Packaged in a 56-pin TSSOP, the CY28442 is priced at $1.80 each in quantities of 1,000.

- Gina Roos


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