Key facts
- Brand
- Texas Instruments
- Model
- 133-MHZ
- Category
- Motherboard
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-01
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TEXAS INSTRUMENTS CDC924 133-MHz CLOCK SYNTHESIZER/DRIVER FOR PC MOTHERBOARDS WITH 3-STATE OUTPUTS handbook
The CDC924 is a clock synthesizer and driver designed to support Intel Pentium III class motherboards. It uses a 14.318-MHz crystal input to generate various system clocks, including CPU, PCI, APIC, and reference signals. The device incorporates two phase-locked loops (PLLs) and on-chip loop filters to eliminate the need for external components.
Read onlineTexas Instruments 133-MHZ specifications
| Supply Voltage VDD (3.3V) | 3.135 – 3.465 V |
|---|---|
| Supply Voltage VDD (2.5V) | 2.375 – 2.625 V |
| Crystal Frequency f(XTAL) | 14.318 MHz |
| Operating Temperature Range | -0 °C to 85°C |
| Package Type | 56-Pin SSOP Package |
All Texas Instruments 133-MHZ documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- TEXAS INSTRUMENTS CDC924 133-MHz CLOCK SYNTHESIZER/DRIVER FOR PC MOTHERBOARDS WITH 3-STATE OUTPUTS handbook 18 p
- TEXAS INSTRUMENTS CDC922 133-MHz CLOCK SYNTHESIZER/DRIVER FOR PC MOTHERBOARDS WITH 3-STATE OUTPUTS handbook 17 p
- TEXAS INSTRUMENTS CDC921 133-MHz CLOCK SYNTHESIZER/DRIVER FOR PC MOTHERBOARDS WITH 3-STATE OUTPUTS handbook 17 p
Questions answered in these manuals
What is the input frequency for the CDC924?
The device uses a 14.318-MHz crystal input to generate multiple output frequencies.
Does the CDC924 require external loop filter components?
No, on-chip loop filters and internal feedback loops eliminate the need for external components.
What microprocessor class is the CDC922 designed for?
It supports a single Pentium III class microprocessor.
Does the device include spread spectrum clocking (SSC)?
Yes, it includes Spread Spectrum Clocking with 0.34% downspread for reduced EMI.
What crystal frequency is required for the CDC921?
The device requires a series fundamental crystal with fO = 14.31818 MHz.
Can the CDC921 operate without an external crystal?
Yes, instead of a crystal, a reference clock input can be provided at the XIN input.