________________________________ From: C. Kumar Sent: Monday, November 20, 2006 9:26 AM To: Lance Wang Cc: Hemant Shah; Ken Willis; Ray Komow Subject: RE: [ibis-macro] some suggestion for AMI proposal lance, can you send this on behalf of me? huang: Thanx for your comments. I have heard and read about the importance of dfe error propagation. This is first version of the spec (AMI) which is confined to basic filtering of signals. The interface functionally separates the filtering, from other data processing. So strictly it addresses physical or virtual modification of a data stream.The data stream is generated and handed over by the EDA domain, which is then filtered and modified in the ip domain. The focus of this current ami interface is to keep it simple yet useful and evolvable. While this version of the interface indeed allows for passing unlimited amount of filter specific parameters, it does not contain knowledge and actions pertaining to particular filter types like DFE. e.g. It does not specifically address issues like error propagation. Your suggestions will be most welcome. ________________________________ From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Huang chunxing Sent: Monday, November 20, 2006 4:28 AM To: ibis-macro@xxxxxxxxxxxxx Subject: [ibis-macro] some suggestion for AMI proposal Hi Kumar and all, First let me introduce myself. My name is Huang Chunxing and I'm a backplane engineer from Huawei. I have read your AMI proposal to IBIS macro model task group. It's a great idea to solve that IBIS couldn't handle the DSP algorithm problems. In the paper, I noticed that AMI also need to meet the requirement of proprietary post-processing of data. I totally agree that. In my opinion, the error propagation of DFE is very good case for this. One error bit of DFE will effectively change the error probability of sequential bits, depending on the DFE taps and coefficients. If we want to analyse the DFE error propagation effect, we need to know the coefficients of DFE. But I didn't find any output params of the defined ami functions related to it, including AMI_init and AMI_getwave. In order to keep the IBIS with most updated DSP algorithm, some extra user defined params may be required. I hope you and group member will consider my suggestion. By the way, I know little about dll. If my understanding is wrong, I apologize first. Thanks! Regards, Huang Huawei Technologies Co.,Ltd. Tel: 86 755 28976229 FAX: 86 755 28976758 Email: huangchunxing@xxxxxxxxxx Web: http://www.huawei.com Warning: The information contained in electronic mail message is intended only for the personal and confidential use of the designated recipient(s) named above. It may be privileged and confidential. If you have received this communication in error, please destroy any and all copies of this message including attached files in your possession.