P2020 eLBC NAND Flash bad block problem

[kchen21]

Dear Sir

Hello.

We have a NAND Flash bad block problem that needs your help.

The processor we use is the P2020. NOR, NAND, and CPLD are hung on the eLBC.
NOR: CS0, 64M Byte;   NAND: CS1, 1G Byte;   CPLD: CS2.
When the eLBC driver of the CPLD is not loaded, the NAND Flash is normal. After the eLBC driver of the CPLD is loaded, the files on the NAND Flash may be lost or damaged during the system running or power-on, resulting in more and more NAND bad blocks, which eventually cannot be used.
Do you have such a case? Or is there any suggestion?
Looking forward to your reply.
Have a nice day.

#eLBC

#NAND Flash

[alexander_yakov]

We have a device errata, which states that simultaneous FCM and GPCM or UPM operation may corrupt NAND flash transaction. Please look P2020 device errata eLBC-A001. The recommended workaround is to set the local bus monitor timeout value to the maximum by setting LBCR[BMT] = 0 and LBCR[BMTPS] = 0xF. Hope this will be helpful.

[kchen21]

Thank you for your reply.

I can't find P2020 device errata on NXP website, can you send it to me,please?

[alexander_yakov]

Sorry, P2020 Device Errata document is not available publicly, please enter a case to Online Technical Support to obtain this document.

To enter a case to Online Technical Support please perform the following:

1. Please open www.nxp.com
2. Click "SUPPORT" drop-down menu
3. Click "All support options" in "SUPPORT" drop-down menu
4. Enter your NXP site login/password if necessary.
5. Click "Go to Tickets" in "Support Requests" section
6. The system should redirect you to this page https://nxpcommunity.force.com/community/CommunityContextPage
7. At this page please create a new folder for support cases by clicking "Add a Folder". Typically - one folder per project.
8. When asked, enter project details - design stage, projected annual volume, end application type and application name.
9. When folder is created, please click "Add a new case" button near to folder name to create support case.