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W83194BR-603 Datasheet, PDF (5/26 Pages) Winbond – Winbond Clock Generator For INTEL P4 Springdale Series Chipset | |||
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W83194BR-603/W83194BG-603
CLOCK GEN. FOR INTEL P4 SPRINGDALE/PRESCOTT SERIES CHIPSET
1. GENERAL DESCRIPTION
The W83194BR-603 is a Clock Synthesizer for Intel Springdale/Prescott chipset. W83194BR-603
provides all clocks required for high-speed microprocessor and provides step-less frequency
programming and 32 different frequencies of CPU, PCI, and 3V66 clocks setting, support SRC clock
outputs, all clocks are externally selectable with smooth transitions.
The W83194BR-603 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-603 also has watchdog timer and reset output pin to support auto-reset when
systems hanging caused by improper frequency setting.
The W83194BR-603 accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply.
2. PRODUCT FEATURES
⢠2 0.7V current-mode Differential pairs clock outputs for CPU
⢠1 0.7V current-mode Differential pairs clock outputs for SRC
⢠3 3V66 clock outputs
⢠1 VCH/3V66 selectable 48MHz or 66MHz
⢠9 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.
⢠3V66/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
Publication Release Date: March, 2006
-1-
Revision 0.7
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