ICS9248-195 is a frequency generator and integrated buffers produced by Integrated Circuit Systems, Inc., which is suitable for PENTIUM II/IIITM and K6 processors. Its main features include support for up to 137MHz frequency, 97MHz to support high-end AMD processors, power management support, frequency selection, and so on.
The ICS9248-195 is a single‑chip clock solution for notebook designs using 440BX, MX, VIA PM/PL/PLE 133‑style chipsets with Coppermine or Tualatin processors. It provides all necessary CPU, PCI, SDRAM and reference clock signals and supports spread‑spectrum operation for EMI reduction.
The document lists key specifications such as output jitter and skew, pin assignments for CPU, PCI and SDRAM clocks, absolute maximum ratings, and detailed electrical characteristics for each clock domain. Ordering information for SSOP and TSSOP packages is also provided.
| CPU Output Jitter @ 2.5V | <300 ps |
|---|---|
| CPU Output Jitter @ 3.3V | <250 ps |
| PCI Early to PCI Skew @ 3.3V (typ) | 3 ns |
| Maximum Supply Voltage | 5.5 V |
| Ambient Operating Temperature | 0 °C to +70 °C |
The device is rated for a maximum supply voltage of 5.5 V.
It can support up to four CPUs operating at 2.5 V or 3.3 V.
Yes, spread‑spectrum can be enabled through register programming to reduce EMI.