Chip Select Values for Spansion NOR Flash

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Chip Select Values for Spansion NOR Flash

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kates
Contributor I

I am trying to configure the chip select registers to interface an IMX27 to a Spansion nor flash - S29WS256P - and am failing dismally !

Has anyone got any experience doing this and can provide any help ?

Thank you and apologies if this sounds trivial - I am ver new to this and have been dropped in the deep end as it were.

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albert_b
Contributor I

Hello Kate,

Please launch the URL attached driectly below, as it will detail

the "Interfacing i.MX3x to S29GL" application note.

Although the app note is written for the S29GL (3.0V FLASH) and i.MX3x,

the interface of the control signals are identical to that of the S29WS-P

(1.8V FLASH), it may provide some additional information.

URL to "Interfacing i.MX3x to S29GL" app note :

http://www.spansion.com/Support/Application%20Notes/Interfacing_imx3x_to_S29GL_AN.pdf

Could you also please provide some details as to what you are currently experiencing?

Thank you and regards,

Albert

Spansion Engineering Solutions  (SES)

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kates
Contributor I

thank you. I was looking at this document but wasn't sure how relevant it was so thank you for your confirmation.

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Yuri
NXP TechSupport
NXP TechSupport

As first approximation, please use default WEIM settings for i.MX27

CS0 channel. They intended for NOR boot and are quite robust.

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kates
Contributor I

thank you. we have gone back to the default values.

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