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W83193R-04A

Features: · Supports Pentium™, Pentium™ Pro, Pentium™ 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 = VDDq2b = 3.3V) or (V...

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SeekIC No. : 004545097 Detail

W83193R-04A: Features: · Supports Pentium™, Pentium™ Pro, Pentium™ II, AMD and Cyrix CPUs with I2C.· 4 CPU clocks· 12 SDRAM clocks for 3 DIMs.· 7 PCI synchronous clocks.· One IOAPIC clock for m...

W83193R-04A Data Sheet

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Part Number:
W83193R-04A
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· Supports Pentium™, Pentium™ Pro, Pentium™ 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 = VDDq2b = 3.3V) or (VDD = VDDq3 = 3.3V, VDDq2 = VDD2b = 2.5V)
· < 250 pS skew among CPU and SDRAM clocks.
· < 250 pS skew among PCI clocks.
· Smooth frequency switch with selections from 50 MHz to 83.3 MHz CPU. (W83193R-04)
· Smooth frequency switch with selections from 50 MHz to 112 MHz CPU. (W83193R-04A)
· I2C 2-Wire serial interface and I2C read back.
· 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
· Packaged in 48-pin SSOP


Pinout

Connection Diagram


Specifications

PARAMETER
Symbol
RATING
Voltage on any pin with respect to GND  Vdd , VIN
-0.5V to +7.0V
Storage Temperature

 TSTG
-65° C to +150° C
Ambient Temperature

 TB
-55° C to +125° C

Operating Temperature

 TA

0°C to + 70°C

Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.


Description

The W83193R-02/-04/-04A is a Main board Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor such as Intel PentiumPro, PentiumII, AMD or Cyrix. Eight different frequency of CPU and PCI clocks are externally selectable with smooth transitions.

The W83193R-02/-04/-04A also provides I2C serial bus interface to program the registers to enable or disable each clock outputs and choose the 0.5% or 1.5% center type spread spectrum.

The W83193R-02/-04/-04A accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply. High drive PCI and SDRAM CLOCK outputs typically provide greater than 1V /nS slew rate into 30 pF loads. CPU CLOCK outputs typically provide better than 1V /nS slew rate into 20 pF loads as maintaining 50 ±5% duty cycle. The fixed frequency outputs as REF, 24 MHz, and 48 MHz provide better than 0.5V /nS slew rate.




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