68300

Thanks,

R. Yablonski

At 04:57 PM 6/17/02 -0400, you wrote:

>See Table 4-16, same book.
>
>Jeff
>
>
>
>
>
>Robert Yablonski <yabo@...> on 06/17/2002 01:34:37 PM
>
>Please respond to 68300@yahoogroups.com
>
>To:    68300@yahoogroups.com
>cc:
>Subject:    RE: [68300] 68376: RS485 half duplex setup
>
>
>Group,
>
>I am confused about how to assign Data Port pull up/down functions during
>reset.  According to table 4-19, chip select pin functions, I can change
>the meaning of several of the pins during reset.  There are twelve pins
>shown, but in the text it says that only 8 data bus lines are associated.
>
>How are they mapped?
>
>The user manual says refer to 4.8.4, which even confused me more.
>
>I have taken over an existing design where the previous engineer has
>assigned boot values to the data bus as follows.
>
>D0 = 1
>D1 = 1
>D2 = 1
>D3 = 0
>D4 = 1
>D5 = 1
>D6 = 1
>D7 = 1
>D8 = 0
>D9 = 0
>D11 = 1
>
>NOTICE D10 WAS SKIPPED
>
>How do I figure out how Table 4-19 is initialized?
>
>Robert E. Yablonski
>Hunt Dabney & Associates
>
>
>
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