ICS9148-60 Datasheet | Integrated Circuit Systems

Integrated Circuit Systems, Inc. Pentium/ProTM System Clock Chip General Description The ICS9148-60 is part of a reduced pin count two-chip clock solution for designs using an Intel BX style chipset. panion SDRAM buffers are ICS9179-11 and –12. There are two PLLs, with the first PLL capable of spread spectrum operation. Spread spectrum typically reduces system EMI by 8-10dB. The second PLL provides support for USB (48MHz) and 24MHz requirements. CPU frequencies up to 100MHz are supported. The I2C interface allows stop clock programming, frequency selection, and spread spectrum operation to be programmed. Clock outputs include two CPU (2.5V or 3.3V), seven PCI (3.3V), one...