From: Steve Tsai <startec@ms11.hinet.net>
To: Paul <eepaul@cnuninet.com>
Cc: linux-mtd <linux-mtd@lists.infradead.org>
Subject: Re: I need some help about nand flash.
Date: Thu, 29 Aug 2002 16:39:37 +0800 [thread overview]
Message-ID: <3D6DDDC9.2080106@ms11.hinet.net> (raw)
In-Reply-To: 000501c24f26$2d8cf800$09090d0a@paul2k
I do not know your condition very well, but I think all the pins of the
flash you connect correctly. What's the WE and RE timimg diagram in your
board? In my board, I use CS to control WE and RE and I have not enought
WE pull-high hold time, when two continue writeb functions are called in
nand_command. I delay few nsec between writeb funciotns to solve my
problem. You can try this and if you can provide more information about
your system, maybe I can give you more sugestion.
Steve Tsai
>Hi:
> I have read your post http://lists.infradead.org/pipermail/linux-mtd/2002-June/005286.html.
>
> Now I encounter the same problem as you.
> The flash I used is TC58128AFTI manufacted by Toshiba.
> I can read Device ID,read Status and Reset it successfully,but I can't read data.
> I captured the timing diagram with a logic analyzer .It meets all requirements stated in
>the chip's datasheet.
> When I perform a read operation(the command code is 0x00),the RY/BY# keeps high when the third address has been latched and that the data I read is always 0x00.
>
>
> Any advice will be apreciated.
>
> Thank you very much.
>
>
>
>
>
parent reply other threads:[~2002-08-29 8:40 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <000501c24f26$2d8cf800$09090d0a@paul2k>]
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