ICS9160-03

www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS9160-03 Preliminary Product Preview Frequency Generator and Integrated Buffer for PowerPC® General Description The ICS9160-03 generates all clocks required for high speed RISC microprocessor systems based on the PowerPC 603 and 604. Five different frequency multiplying factors are selectable and offer smooth frequency transitions. BCLK signals are synchronous to PCLK and operate at PCLK/2 for optimum synchronous PCI bus performance. The multiplying and ratio factors can be customed for specific applications. Both individual and group glitch-free stop and start ofthe clock signals are provided, as well as a power-down mode to mize power consumption. The individual stop and start is provided through a serial interface control. A global output enable pin simplifies production board testing, and a test mode is available to aid in system design and diagnostics. Features Generates four processor and seven synchronous bus clocks plus graphic, floppy, keyboard and reference clocks Selectable 33.3/50/60/66.6/80 MHz PCLKs ±150ps maximum PowerPC PLL in-band jitter All synchronous clocks skew matched to ±250ps Individual or group stop-clock control Power-down modes minimize standby current Custom configurations available 3.0V - 5.5 supply range 32-pin SOIC package Pin Configuration DataShee DataSheet4U.com Block Diagram 28-Pin SOIC DataSheet4U.com 9160-03 RevC 06/19/97P PRODUCT PREVIEW documents contain i...