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MSP430 control register default values - how to read in reference manual??

Brian Luebke15

Intellectual 350 points

How are the default states of the control registers defined in the reference manual?

What's the difference between a 0 and (0) as seen in attached pic.

over 10 years ago

0 Tony Philipsson over 10 years ago

Guru 12050 points

Legend
rw: Bit can be read and written.
rw-0,1: Bit can be read and written. It is reset or set by PUC.
rw-(0,1): Bit can be read and written. It is reset or set by POR.

A PUC (Power Up Clear) is ALWAYS generated by a POR (Power On Reset), but a POR is not always generated by a PUC. Certain things that cause a PUC will not necessarily alter RAM. A PUC is generated by the following events, as outlined in the Users Guide.

0 Brian Luebke15 over 10 years ago in reply to Tony Philipsson

Intellectual 350 points

Thanks! I'm new to TI processors and documentation. I appreciate the help!

0 Luis RC over 10 years ago in reply to Brian Luebke15

TI__Genius 16840 points

Brian,

Just FYI, the convention is explained in the User's Guide in "Register Bit Conventions", right after the Glossary

Regards,
Luis R

0 Brian Luebke15 over 10 years ago in reply to Luis RC

Intellectual 350 points

Ah.. yes, I see it now.

not sure why I couldn't find it with searches..

Thanks!!

0 sgspecker over 10 years ago in reply to Brian Luebke15

TI__Intellectual 2765 points

This is also explained in the MSP430 Design Workshop. (It's on page 4-4 in the current revision of the workshop manual.)

You can find the workshop located on the TI wiki at: http://processors.wiki.ti.com/index.php/MSP430_Design_Workshop

Take Care,
Scott

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