Programmable Flash integrated circute 952906BFLFT 10A Current
programming ic chips
,ic programmer circuit
Programmable Flash integrated circute ICS952906BFLFT 10A Current
ICS952906BFLFT
Programmable Timing Control Hub™ for Next Gen P4™ processor
Recommended Application: VIA VN800/CN700/P4M800 style chipset for P4 processor
Output Features:
• 3 - 0.7V current-mode differential CPU pairs
• 10 - PCI, 3 free running, 33MHz
• 2 - REF, 14.318MHz
• 3 - 3V66, 66.66MHz
• 1 - 48MHz • 1 - 24/48MHz
• 2 - 25MHz @ 2.5V
Key Specifications:
• CPU/SRC outputs cycle-cycle jitter < 125ps
• 3V66 outputs cycle-cycle jitter < 250ps
• PCI outputs cycle-cycle jitter < 250ps
• CPU - AGP skew < +/- 350ps
• AGP-PCI skew between 1~3.5ns
Features/Benefits:
• Programmable output frequency.
• Programmable asynchronous 3V66&PCI frequency.
• Programmable output divider ratios.
• Programmable output skew.
• Programmable spread percentage for EMI control.
• Watchdog timer technology to reset system if system malfunctions.
• Programmable watch dog safe frequency.
• Support I2C Index read/write and block read/write operations.
• Uses external 14.318MHz reference input
Absolute Maximum Ratings
Core Operating Voltage . . . . . . . . . . . . . . . . . . . 4.6 V I/O
Operating Voltage . . . . . . . . . . . . . . . . . . . . . 3.6V
Lo gic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND –0.5 V to VDD + 0.5 V
Ambient Operating Temperature . . . . . . . . . . . . 0°C to +70°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Case Temperature . . . . . . . . . . . . . . . . . . . . . . . . 115°C
ICS952906A is a 48 pin clock chip for VIA VN800/CN700/P4M800 style chipsets. When used with a fanout DDR buffer, such as the 93788, it provides all the necessary clock signals for such a system. The ICS952906A is part of a whole new line of ICS clock generators and buffers called TCH™ (Timing Control Hub). This part incorporates ICS's newest clock technology which offers more robust features and functionality. Employing the use of a serially programmable I2 C interface, this device can adjust the output clocks by configuring the frequency setting, the output divider ratios, selecting the ideal spread percentage, the output skew, the output streCM GROUPh, and enabling/disabling each individual output clock. M/N control can configure output frequency with resolution up to 0.1MHz increment.
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