RE: Address lines Pull UP
"Dobbin Allan-r11834" <[email protected]>
| Newsgroups | gmane.comp.hardware.motorola.microcontrollers |
|---|---|
| Message-ID | <4147ED8B92A864498825C07E53594E4AD486EF@az33exm20.fsl.freescale.net> |
Codewarrior runs a configuration script before downloading and executing code from RAM. This config file is part of your project and may be modified. Once your code executes, it can overwrite registers that the config script has written earlier. Use the debugger to check the value of PDMSR before executing your code is another way to determine of the config file is writing this register. Ensure something on your board isn't pulling these signals high by testing them after a reset before executing with codewarrior. - Allan -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of harini m Sent: Monday, May 22, 2006 9:14 AM To: mpc500 group Subject: [MPC500] Address lines Pull UP Hi, I am working on MPC565 processor on Metrowerks Code worrior. I am facing problem with Address lines. Some of the address lines are showing active high state after dumping the code into internal SRAM by using Code warrior (I think this are acting like pull up connected pins) . I have already disabled pull ups for all Address lines in PDMSR register. The address lines A24,A23, A22, A21, A16 are acting like Pull Up connected pins. Please suggest me why the address lines are behaving like this. Is there any default initialization sittings in Metro werkes CW. Regards Harini.M --------------------------------- Sneak preview the all-new Yahoo.com. It's not radically different. Just radically better. [Non-text portions of this message have been removed] ----------------------------------------------------------- To learn more about Freescale Microcontrollers, please visit http://www.freescale.com/mcu Yahoo! Groups Links ------------------------ Yahoo! Groups Sponsor --------------------~--> You can search right from your browser? It's easy and it's free. See how. http://us.click.yahoo.com/_7bhrC/NGxNAA/yQLSAA/dN_tlB/TM --------------------------------------------------------------------~-> ----------------------------------------------------------- To learn more about Freescale Microcontrollers, please visit http://www.freescale.com/mcu Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/MPC500/ <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/