From owner-freebsd-embedded@FreeBSD.ORG Tue Mar 18 20:59:22 2014 Return-Path: Delivered-To: freebsd-embedded@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id ACEC5FDC for ; Tue, 18 Mar 2014 20:59:22 +0000 (UTC) Received: from mail-pd0-f178.google.com (mail-pd0-f178.google.com [209.85.192.178]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 7CAD2D5F for ; Tue, 18 Mar 2014 20:59:22 +0000 (UTC) Received: by mail-pd0-f178.google.com with SMTP id x10so7626184pdj.23 for ; Tue, 18 Mar 2014 13:59:16 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:sender:content-type:mime-version:subject:from :in-reply-to:date:cc:content-transfer-encoding:message-id:references :to; bh=QgQXl+E7ZaQUkc5McNmmSdKtzJatRTpHpwmD0gXCiKM=; b=WeM4Rci/c4ChiepoxtqrvJ5pQbahsDw0OR7c1CWe4rVZztflOm/kLd/+TyBZWPd0Mn e5Dyq+cH4cFFnsxUDiiwXtH8+hZtlzRvAXmQfn7t8tOPf2f0qEHFhEurFs88HWMNn9tW kR0oVq7oWXP2ydecCa7DQPG800Thi4F2JelIw+zDJ2ksUAgfHB/lSRMyzJBqF3Upv1+Z /Qzpy+0xY5Rqu1IgUtzPl4IWeaq0KqnuRnHh93oIw9b4r5Lypsd/i6OmSp95A5Bi4dTy 6gi+l4AXB0WhhmObMdeXoTLgg5PUjJiE2Gfa0tiwcNQIo+RSf2DwgPW/limWzTRavkbK 8TaQ== X-Gm-Message-State: ALoCoQm5URSgW3mQ5Sv3pXqQECY7PsvOJ3JlrmO6Np+TrE70NzFIqUNohazTezr7KMeiXl+LaNm6 X-Received: by 10.66.193.161 with SMTP id hp1mr27305185pac.20.1395175983155; Tue, 18 Mar 2014 13:53:03 -0700 (PDT) Received: from bsdimp.corp.netflix.com ([69.53.237.72]) by mx.google.com with ESMTPSA id sh5sm55546064pbc.21.2014.03.18.13.53.02 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 18 Mar 2014 13:53:02 -0700 (PDT) Sender: Warner Losh Content-Type: text/plain; charset=iso-8859-1 Mime-Version: 1.0 (Mac OS X Mail 7.2 \(1874\)) Subject: Re: nand controller - how should one handle controllers that want the command+address bits together? From: Warner Losh In-Reply-To: Date: Tue, 18 Mar 2014 13:53:00 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: <5BF1217D-6423-443B-A3AB-1722CDDDAD74@bsdimp.com> To: Adrian Chadd X-Mailer: Apple Mail (2.1874) Cc: "freebsd-embedded@freebsd.org" X-BeenThere: freebsd-embedded@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Dedicated and Embedded Systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Mar 2014 20:59:22 -0000 On Mar 18, 2014, at 12:05 PM, Adrian Chadd wrote: > [snip] >=20 > Off-hand, it's some 128MiB Hynix part. >=20 > I'd give you the ID bytes, but so far I can't get at them all. :-) >=20 128MiB is 1Gib part. On that part, 1 bit of ECC is almost certainly = sufficient, especially if this is a SLC part, which we have with our software = implementation. Warner