w83194br-603 Winbond Electronics Corp America, w83194br-603 Datasheet - Page 5

• Manufacturer Part Number: w83194br-603
• Description: Winbond Clock Generator For Intel P4 Springdale Series Chipset
• Manufacturer: Winbond Electronics Corp America

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.
2
The W83194BR-603 provides I
C 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
2
• I
C 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
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Revision 0.7