From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from msr8.hinet.net ([168.95.4.108] helo=msr.hinet.net) by pentafluge.infradead.org with esmtp (Exim 3.22 #1 (Red Hat Linux)) id 17kKqO-0005gc-00 for ; Thu, 29 Aug 2002 09:40:02 +0100 Message-ID: <3D6DDDC9.2080106@ms11.hinet.net> Date: Thu, 29 Aug 2002 16:39:37 +0800 From: Steve Tsai MIME-Version: 1.0 To: Paul CC: linux-mtd Subject: Re: I need some help about nand flash. References: <000501c24f26$2d8cf800$09090d0a@paul2k> Content-Type: text/plain; charset=gb2312 Content-Transfer-Encoding: 7bit Sender: linux-mtd-admin@lists.infradead.org Errors-To: linux-mtd-admin@lists.infradead.org List-Help: List-Post: List-Subscribe: , List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: 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. > > > > >