W83194BR-903 | selling W83194BR-903 with Datasheet PDF Selling , - WINBOND[Winbond] - STEPLESS VIA PT/PM MAIN CLOCK GENERATOR

The W83194BR-903 is a Clock Synthesizer for VIA PT880/PM880 chipset. W83194BR-903 provides all clocks required for high-speed microprocessor and provides step-less frequency programming and 32 different frequencies of CPU, PCI, and AGP clocks setting, support two 25MHz clock outputs, all clocks are externally selectable with smooth transitions.

The W83194BR-903 provides I2C serial bus interface to program the registers to enable or disable each clock outputs and provides -0.5% and +/-0.25% center type spread spectrum or programmable S.S.T. scale to reduce EMI.

The W83194BR-903 also has watchdog timer and reset output pin to support auto-reset when systems hanging caused by improper frequency setting.

The W83194BR-903 accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply.

Parameter	Rating
Absolute 3.3V Core Supply Voltage	- 0.5 V to + 4.6 V
Absolute 3.3V I/O Supple Voltage	- 0.5 V to + 4.6 V
Operating 3.3V Core Supply Voltage	3.135V to 3.465 V
Operating 3.3V I/O Supple Voltage	3.135V to 3.465 V
Storage Temperature	- 65°C to + 150°C
Ambient Temperature	- 55°C to + 125°C
Operating Temperature	0°C to + 70°C
Input ESD protection (Human body model)	2000V

• 3 0.7V current-mode Differential pairs clock outputs
• 2 2.5V 25MHz clock outputs
• 3 AGP clock outputs
• 10 PCI synchronous clocks
• 1 24_48MHz clock output for super I/O.
• 1 48 MHz clock output for USB.
• 2 14.318MHz REF clock outputs.
• AGP/PCI clock out supports synchronous and asynchronous mode
• Smooth frequency switch with selections from 100 to 400MHz
• Step-less frequency programming
• I²C 2-Wire serial interface and support byte read/write and block read/write.
• -0.5% and +/- 0.25% center type spread spectrum
• Programmable S.S.T. scale to reduce EMI
• Programmable registers to enable/stop each output and select modes
• Programmable clock outputs Slew rate control and Skew control
• Watch Dog Timer and RESET# output pins
• 48-pin SSOP package

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W83194BR-903
STEPLESS VIA PT/PM MAIN CLOCK GENERATOR

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Datasheet

Abstract

W83194BR-903STEPLESS VIA PT/PM MAIN CLOCK GENERATOR