From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.acdstar.com (mail.acdstar.com [209.98.244.9]) by ozlabs.org (Postfix) with ESMTP id 6400367A6C for ; Tue, 26 Apr 2005 08:00:35 +1000 (EST) Message-Id: <6.2.1.2.1.20050425163431.031d58b0@mail.int.acdstar.com> Date: Mon, 25 Apr 2005 17:00:39 -0500 To: "Stephen Warren" , From: "Eric N. Johnson (ACD)" In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Subject: RE: New MPC5200 Eratta/ATA Bugs List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , At 02:35 PM 4/25/2005, Stephen Warren wrote: >Freescale have been working with us on a board work-around for the >problem. This basically involves deriving a substitute ATA_ISOLATION >signal from the regular ATA control signals, in some cases. Are you able to share the circuit they've recommended? Is it as simple as: ISOLATION = ((ATA_CS1 or ATA_IOR) and (ATA_CS0 or ATA_IOR)) This seems like it would be in violation of the setup and hold time requirements for the data bus. I've been told there's a new silicon revision of the MPC5200 due sometime later in the year, but the date keeps getting pushed back. Eric ------------------------------------ Eric Johnson, Electrical Engineer Advanced Communication Design 7901 12th Avenue South Bloomington, MN 55425 Ph: 952-854-4000 Fax: 952-854-5774