CCS/TMS570LS3137: EMIF WE extra pulse

Jeff Chen71

Part Number: TMS570LS3137
Other Parts Discussed in Thread: HALCOGEN

Tool/software: Code Composer Studio

HI,

Customer using revision D TMS570LS3137 , nomatter asynchronous type set to "device" or "strongly-ordered" the WE always had tripple pulse.\

The halcogen setting and logic analyzer capture as below picture.

Thanks.

over 7 years ago

0 QJ Wang over 7 years ago

TI__Guru**** 198766 points

Hello Jeff,

Your nWE waveform looks fine. This is 1 nWE in 1 nCS valid period.

0 Jeff Chen71 over 7 years ago in reply to QJ Wang

Expert 1345 points

Hi QJ,

In picture1, I add a break point at line 68, and just press F6 step over this make the EMIF_CS PIN generate 3 pulse as picture2.

I had tested no mater the type is normal 、stronglyordered or device the waveform were the same. Could you give me some advice to check.

Thanks

picture3/4 is halcogen setting.

Picture 5 is halcogen compiler output. Customer didn't modify that.

0 Jeff Chen71 over 7 years ago in reply to Jeff Chen71

Expert 1345 points

Hi QJ,
After added MPU initial statment resolve the problem. Thanks your support always.

_mpuDisable_();
_mpuInit_();
_mpuEnable_();

e2echina.ti.com/.../101417

0 QJ Wang over 7 years ago in reply to Jeff Chen71

TI__Guru**** 198766 points

Hi Jeff,

The MPU should be enabled and initialized in sys_startup.c by calling _mpuInit_() which is generated through HALCoGen. Thank you for updae.

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CCS/TMS570LS3137: EMIF WE extra pulse