You sent a supplementary question direct to me. Verizon bounced the reply=20 back to me - so here is my reply to your question on whether multimastered= =20 I2C can cause the stop problem noted in the datasheet. "I've never used multi-master arbitration, but basically if more than one master tries to transmit at the same time during the address phase of one of them, a stop could be assumed by one of the masters causing the problem stated in the data sheet. I think you are only going to know by either finding someone else who has done this or by experimentation." Colin -- cdb, colin@btech-online.co.uk on 16/12/2011 =20 Web presence: www.btech-online.co.uk =20 =20 Hosted by: www.justhost.com.au =20 =20 This email is to be considered private if addressed to a named individual= =20 or Personnel Department, and public if addressed to a blog, forum or news= =20 article. =20 =20 =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .