My 2 cents worth: I would also suggest to anyone that designs a new generation FTDI based interface that a target voltage monitor be added (a simple comparator may do) to report if the target is switched off/not powered, before attempting JTAG comms.
Best regards, Pieter -----Original Message----- From: Rick Altherr [mailto:kc8...@kc8apf.net] Sent: 05 February 2009 07:24 PM To: james.tyou Cc: Openocd-development Subject: Re: [Openocd-development] FTX232H bring higher JTAG speed? On Feb 5, 2009, at 3:28 AM, james.tyou wrote: > Hi, All, > > Just noticed FTDI has released 2 new chips. > > FT2232H, FT4232H > > "MPSSE.Multi*Purpose Synchronous Serial Engines (MPSSE), capable of > speeds up to 30 Mbits/s, provides > flexible synchronous interface configurations. " > > > will these chips bring higher JTAG SPEED? > > > Regards, > JT > _______________________________________________ > Openocd-development mailing list > Openocd-development@lists.berlios.de > https://lists.berlios.de/mailman/listinfo/openocd-development Yes. I believe they also support RTCK which will make JTAG speed selection much easier if your target also supports it. Someone just needs to build a board using the ft2232h and then work with the libftdi project to get MPSSE support working on it. Then we can work on fixing up the openocd driver. -- Rick Altherr kc8...@kc8apf.net "He said he hadn't had a byte in three days. I had a short, so I split it with him." -- Unsigned Notice This email is intended for the addressee only and may contain legally privileged and/or confidential information. If you have received this email in error and are not the intended recipient, you are hereby informed that you are not entitled to read, broadcast, distribute or in any manner whatsoever use the contents of this email or any attachments thereto. You are requested to please notify Psitek that you have received the email and then delete it. Unless clearly stated otherwise, the content and sentiments expressed in this email or any attachments thereto are those of the sender and not of Psitek (Proprietary) Limited. Psitek does not accept liability for any damages, loss or expense of any nature whatsoever arising (a) out of or in connection with the email or any attachments thereto and/or (b) from any act or omission by the recipient relying upon the content of the email or attachments. Psitek further disclaims liability for any damages caused by computer and/or so ftware viruses. Should this email contain the terms of a contract, no binding agreement will result until such time as a written (hardcopy) document is signed on behalf of Psitek. _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
