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DM3730

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Posted by HAREL ZECHARYA

on Aug 08 2011 07:52 AM

Prodigy75 points

Dear All,

Customer using 2 versions : XDM3730ACUS AND DM3730CUS100.

Customer not able to run the XDM3730A at 1Ghz and send me email :

We are not able to configure the frequency to 1Ghz , while with DM3730CUS100 devices we don’t have problem to do it.

System not able to run and have to restart again and again.

Kernel version 2.6.32.

Device version / Marking :

XDM3730ACUS

0LZCL59 G1

773 CUS

Appreciate if you can help to solve .

thank

HAREL

All Replies

Posted by Kazunobu Shin

on Aug 17 2011 07:37 AM

Expert7005 points

Hi HAREL,

Are you using Linux PSP from TI ? The software might be checking Control Device Status Register 15:0 (Address 0x4800 244C) and setting ARM clock freq to 1 GHz if the device is 1GHz capable device. Can you check the difference on the register value between two devices and also see if your software checks it.

Regards,
Kazunobu Shin
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Posted by dspqaz

on Oct 06 2011 07:40 AM

Prodigy30 points

I read register 0x4800 244c and the value there is the same for the both devices 0x0c00.

According to the Technical Reference Manual these devices are not 1Ghz capable.

I read also register CONTROL.CONTROL_IDCODE[31:0] 0x4830 A204 and the values was different

XDM3730ACUS - 0x1B89 102F

DM3730CUS100 - 0x2B89 102F

Please advice way the register value is not 0x0e00.

Thanks,

Yoni

Posted by dspqaz

on Nov 28 2011 03:03 AM

Prodigy30 points

Please advise why the value in the register is the same for the two devices and not according the table bellow?

thanks,

Yoni

Posted by Kazunobu Shin

on Nov 28 2011 12:45 PM

Expert7005 points

Please review usage note in regard to "Speed Binned" bit in the errata (http://www.ti.com/lit/er/sprz319d/sprz319d.pdf).

Usage Note 2.22 — "Speed Binned" Bit in Control Device Status Register Not Programmed in Devices Built and Tested Prior to June 2011

From the device marking, DM3730CUS100 should be capable of ARM 1G Hz.

Posted by John J Wu

on Apr 12 2012 00:59 AM

Expert3000 points

_{Hi, I read the following registers with the following value. Which device is it going to be?}

The value of CONTROL_IDCODE register is 0x2B89102F.

The value of register 0x4800244C is 0x0C00.

Thanks,

John