W83193R-01中文资料华邦电子数据手册PDF规格书

GENERAL DESCRIPTION

The W83193R-01 is a Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor such as Intel PentiumPro , AMD or Cyrix. Eight different frequency of CPU and PCI clocks are externally selectable with smooth transitions.

PRODUCT FEATURES

• Supports PentiumÔ, PentiumÔ Pro, PentiumÔ II, AMD and Cyrix CPUs with I2C.

• 4 CPU clocks.

• 12 SDRAM clocks for 3 DIMs.

• 7 PCI synchronous clocks.

• One IOAPIC clock for multiprocessor support.

• Optional single or mixed supply: (Vdd = Vddq3 = Vddq2 = 3.3V) or (Vdd = Vddq3 = 3.3V, Vddq2 = 2.5V)

• < 250ps skew among CPU and SDRAM clocks.

• < 250ps skew among PCI clocks.

• Smooth frequency switch with selections from 50 MHz to 83.3 MHz CPU.

• I2C 2-Wire serial interface.

• 0.6 or 1.5 center type spread spectrum function to reduce EMI.

• Programmable registers to enable/stop each output and select modes. (mode as Tri-state, or Normal )

• MODE pin for power Management.

• 48 MHz for USB.

• 24 MHz for super I/O.

• 48-pin SSOP package.