ICS9250-19 Datasheet, PDF (3/15 Pages) Integrated Circuit Systems – Frequency Generator & Integrated Buffers for Celeron & PII/III™

ICS9250-19
General Description
The ICS9250-19 is the single chip clock solution for Desktop/designs using BX, Appollo Pro 133 type of chip sets. It provides
all necessary clock signals for such a system.
Spread spectrum may be enabled through I²C programming. Spread spectrum typically reduces system EMI by 8dB to
10dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9250-19
employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature
variations.
Serial programming I²C interface allows changing functions, stop clock programming and frequency selection.
Mode Pin - Power Management Input Control
MODE
(Latched Input)
0
1
PCI_STOP#
(Input)
REF0
(Output)
Third party brands and names are the property of their respective owners.
3