From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean Delvare Subject: Re: [PATCH v3] New-style I2C and SMBus EEPROM driver (with device_ids) Date: Wed, 11 Jun 2008 11:09:21 +0200 Message-ID: <20080611110921.5bf770dd@hyperion.delvare> References: <20080605193103.GA13062@pengutronix.de> <20080608115033.5dd91786@hyperion.delvare> <20080610134347.GA4210@pengutronix.de> <20080610185443.14a4516e@hyperion.delvare> <20080611073323.GA4257@pengutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20080611073323.GA4257-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: i2c-bounces-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org Errors-To: i2c-bounces-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org To: Wolfram Sang Cc: David Brownell , i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org List-Id: linux-i2c@vger.kernel.org On Wed, 11 Jun 2008 09:33:25 +0200, Wolfram Sang wrote: > > > AT24_FLAG_24C00 (doesn't really matter), and AT24C01 needs 128 > > > addresses?? (please, someone, prove me wrong) > > > > Why do you think so? My personal guess is that they simply forgot to > > mention the address in the datasheet. A chip responding to all > > addresses would prevent any other chip from being connected to the bus, > > that's impractical enough to be reasonably certain that no manufacturer > > did this. > > No I2C-address is mentioned in the whole datasheet; all the timing > diagrams put the memory offset to the place where one would expect the > I2C-address; the pins usually named A0-A2 are not connected... Ooch. I didn't notice the timing diagrams... OMG. > Maybe it once made the chip one cent cheaper, I dunno, but I wouldn't be > that surprised :) Doesn't really matter for at24, luckily. Indeed. If this chip is the crazy thing you suspect (and I now fear you are correct), it's not compatible with the other EEPROMs, so we don't really care about it. -- Jean Delvare _______________________________________________ i2c mailing list i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org http://lists.lm-sensors.org/mailman/listinfo/i2c