Article ID: 000085195 Content Type: Troubleshooting Last Reviewed: 09/11/2012

Can I connect pins SD_DQS[3..0] together when using the Excalibur™ SDRAM controller?

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BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description When using the Excalibur SDRAM controller in SDR mode, SD_DQS[0] must be connected to SD_CLK_N. SD_DQS[3..1] are not used and drive High-Z in SDR mode, so it is safe to connect these pins to other signals, including SD_DQS[0]. However, for signal integrity purposes, it is recommended that SD_DQS[3..1] be left unconnected when using the Excalibur SDRAM controller in SDR mode.

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Excalibur™