ICS9248-99

Features:

·Up to 200.4MHz frequency support
·Support FS0-FS3 trapping status bit for I2C read back.
·Support power management: Power down Mode form I2C programming.
·Spread spectrum for EMI control ( ± 0.25% center).
·FS0, FS1, FS2, FS3 must have a internal 120K pull-Down to GND.
·Uses external 14.318MHz crystal


Pinout




Specifications

Core Supply Voltage . . . . . . . . . . . . . . . . . .. . . . . .  . . . . . 4.6 V
I/O Supply Voltage . . . . . . . . . . . . . . . . . . .. . . . . .  . . . . . . 3.6V
Logic Inputs . . . . . . . . . . . . . .. . . . . . GND -0.5 V to VDD +0.5 V
Ambient Operating Temperature . . . . . . . . . . . . . 0°C to +70
Storage Temperature . . . . . . . . . . . . . . . . . . . . -65 to +150


Description

The ICS9248-99 is the single chip clock solution for Desktop designs using 810/810/E style chipset. 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 ICS9248-99 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.