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dear all, we use the C6211 on our own design and connect it to an other board with the host port interface. HWOB = 1 write fix + autoincrement address read autoincrement address only problem: if we write data to the C6211 with lower part == ffff, then on some pattern of the higher part (fffe,fffd,fff7,...), the read is corrupted. data_low = data_high the HPA address pointer is 2x incremented have you an idea of that? thanks and mfg (best regards) willi elherr |
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problems with C6211 HPI
Started by ●March 14, 2001
Reply by ●March 15, 20012001-03-15
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Hello Willi, We had similar problem with C6211. There is TI's errata on the web site, but I think there is maybe something more. We can write and read from HPIC and HPIA. But we cannot have reliable read and write to HPID. The only way we can do something is the following: HPIA write 0x2000 HPID++ write 0x12345678 HPIA write 0x1FFC HPID++ read (returns something) HPID++ read (returns 0x12345678) The only thing that we have working is HPID autoincrement access, and even then we need to have one extra read from the address before original. Errata does not mention this extra read. Hopefully this will help a little bit. Best regards, Rastko Selmic -- ***************************************** Rastko R. Selmic, Ph.D. DSP System Engineer Signalogic, Inc. 9617 Wendell, Dallas, Texas, 75243 Tel. 214-343-0069, Fax. 214-343-0163 Email: ***************************************** willi elherr wrote: > dear all, > > we use the C6211 on our own design and connect it to an other board with > the host port interface. > > HWOB = 1 > write fix + autoincrement address > read autoincrement address only > > problem: > if we write data to the C6211 with lower part == ffff, then on some > pattern of the higher > part (fffe,fffd,fff7,...), the read is corrupted. > data_low = data_high > the HPA address pointer is 2x incremented > > have you an idea of that? > > thanks and mfg (best regards) willi elherr > > ________________________________ > Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. > > _____________________________________ > About this discussion group: > > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.yahoogroups.com/group/c6x > > Other Groups: http://www.dsprelated.com > ">http://docs.yahoo.com/info/terms/ > > -- ***************************************** Rastko R. Selmic, Ph.D. DSP System Engineer Signalogic, Inc. 9617 Wendell, Dallas, Texas, 75243 Tel. 214-343-0069, Fax. 214-343-0163 Email: ***************************************** |
