BDLC on 9S12DP256 - transceiver delay? | 68HC12

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I'm using the MC33390 transceiver, and not sure of correct setting for the DLCBARD register delay bits. Can anyone give me a number that's known to work with this transceiver? (I'm now using 0x09 for a 18us delay.) Is the setting really critical or should I expect to receive some data even if it's the wrong delay? (So far I'm not getting anything, but I may have fried the 33390 by applying 12V to the sleep pin.)

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--- In , "ctrobot28" <patrickc9@c...> wrote: > > I'm using the MC33390 transceiver, and not sure of correct setting > for the DLCBARD register delay bits. Can anyone give me a number > that's known to work with this transceiver? (I'm now using 0x09 for a > 18us delay.) Is the setting really critical or should I expect to > receive some data even if it's the wrong delay? (So far I'm not > getting anything, but I may have fried the 33390 by applying 12V to > the sleep pin.) I've used DLCBARD=0x47 and gotten it to work with out a problem. Check that everything is working by 1) leaving it in loopback mode (should receive everything you send out) 2) Put BDLC in normal mode, don't hook it up to the bus, send out 1 message, and check your receive buffer. The receive buffer should have the message you just sent out. 3) hook up a scope, and watch what you send out.

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Discussion Groups | 68HC12 | BDLC on 9S12DP256 - transceiver delay?

BDLC on 9S12DP256 - transceiver delay? - ctrobot28 - Oct 30 14:16:00 2003

Re: BDLC on 9S12DP256 - transceiver delay? - Tim Raabe - Oct 31 8:52:00 2003