Backup Clock Generator: Difference between revisions
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The '''Backup Clock Generator''' was added to the [[Xenon (Motherboard)|Xenon]] motherboard due to the [[ANA]]'s clock generator having excessive PLL jitter. | The '''Backup Clock Generator''' was added to the [[Xenon (Motherboard)|Xenon]] motherboard due to the [[ANA]]'s clock generator having excessive PLL jitter. The [[HANA]] chip added on [[Zephyr]] fixed the PLL jitter issue and thus the Backup Clock Generator was removed. | ||
The chip used is a Cypress CY28517. Pre final motherboards used the ICS MK1493. | The chip used is a Cypress CY28517. Pre final motherboards used the ICS MK1493. | ||
Revision as of 15:41, 18 June 2023
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| Part Number | Cypress CY28517 ICS MK1493 |
|---|---|
| Introduced | Late 2005 |
| Used In | Xenon Elpis |
| Package | TSSOP28 |
| Successor | HANA |
The Backup Clock Generator was added to the Xenon motherboard due to the ANA's clock generator having excessive PLL jitter. The HANA chip added on Zephyr fixed the PLL jitter issue and thus the Backup Clock Generator was removed.
The chip used is a Cypress CY28517. Pre final motherboards used the ICS MK1493.
Specifications
- 4x 100MHz differential: CPU, GPU, PCIe, SATA
- 1x 48MHz single ended: SMC, USB
- 2x 25MHz single ended: Ethernet, SATA