Subject:
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Re: MODB - How Is Expanded Mode Entered
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 7 May 1998 10:11:37 GMT
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Original-From:
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Jeff Loeliger <r12110@AVOIDSPAMemail.sps.mot.com>
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Viewed:
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1441 times
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Mike,
I never goes into expanded mode! The Handyboard operates in special test mode
and special bootstrap mode. Special test mode works like expanded mode but some
the internal registers are not protected.
Mike Davis wrote:
>
> If MODB pin is always grounded, how does the MCU get into expanded
> mode to access the 32K SRAM?
>
> The data sheet shows MODB HIGH to enter expanded mode. It show MODB
> LOW to enter single chip mode.
>
> What am I missing?
> --
> -----------------------------------------------------------------
> ipscone@halcyon.com Shoot-To-Win!
>
> Protect the 2nd Amendment! Your rights may be next!
> -----------------------------------------------------------------
-- Jeff
______________________________________________________________________
\ Jeff Loeliger Motorola SPS \
\ email: r12110@email.sps.mot.com \"/ Systems Engineering Department\
\ phone: +44-1355-56-5400 ( ) Powertrain Systems Division \
\ fax : +44-1355-56-6300 | East Kilbride, Scotland \
\_____________________________________________________________________\
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Message is in Reply To:
 | | MODB - How Is Expanded Mode Entered
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| If MODB pin is always grounded, how does the MCU get into expanded mode to access the 32K SRAM? The data sheet shows MODB HIGH to enter expanded mode. It show MODB LOW to enter single chip mode. What am I missing? -- ---...--- ipscone@halcyon.com (...) (27 years ago, 2-May-98, to lugnet.robotics.handyboard)
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