Programmable System Clock Chip For ATI RS/RD690 K8TM-Based Systems
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Overview
Description
The 951464 is a main clock synthesizer chip that provides all clocks required for ATI RS/RD690-based systems. An SMBus interface allows full control of the device.
Features
- 2 - 0.7V current-mode differential CPU pairs
- 6 - 0.7V current-mode differential SRC pairs
- 2 - 0.7V current-mode differential ATIG pairs
- 1 - HyperTransport clock seed
- 2 - 48MHz USB clock
- 3 - 14.318MHz Reference clock
- CPU outputs cycle-to-cycle jitter < 85ps
- SRC outputs cycle-to-cycle jitter < 125ps
- ATIG outputs cycle-to-cycle jitter < 125ps
- +/- 300ppm frequency accuracy on CPU, SRC & ATIG clocks
- 3 - Programmable Clock Request pins for SRC and ATIG clocks
- ATIGCLKs are programmable for frequency
- Spread Spectrum for EMI reduction
- Outputs may be disabled via SMBus
- External crystal load capacitors for maximum frequency accuracy
Comparison
Applications
Documentation
= Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 283 KB | |
| End Of Life Notice | PDF 125 KB | |
| Product Change Notice | PDF 361 KB | |
| End Of Life Notice | PDF 125 KB | |
| End Of Life Notice | PDF 122 KB | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| TSSOP | 56 | C | Yes | Reel |
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