• State Resolved
  • Locked Locked
  • Replies 8 replies
  • Subscribers 32 subscribers
  • Views 918 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LM95231 CIMM address issues

omer keilaf
Prodigy 90 points
Other Parts Discussed in Thread: LM95231

we  have ordered the LM95231 ICs. they come in three different part numbers due to the their SMB addresses

CIMM – 0x57

CIMM-1  -  0x19

CIMM-2  - 0x2A

we have managed to control both CIMM-1 and CIMM-2 ( many different components)

for some reason, the CIMM ( address 0x57 ) does not respond ( although all signals look correct)

please advice asap

  • 0
    TI__Mastermind 37390 points

    Hi Omer,

    That was very strange. I will try on my bench sometimes tomorrow. Could you please provide me the snapshot of SMBDAT and SMBCLK when the software communicates to CIMM (address 0x57)? Did you have all of them on the same bus?

    Aaron

  • 0 in reply to Aaron Heng
    TI__Mastermind 37390 points

    Hi Omer,

    I just want to provide some updates that I was unable to locate LM95232CIMM in my stock, but I have many B version. I will get back to you soon.

    Aaron

  • 0 in reply to Aaron Heng
    Prodigy 90 points

    Hi

    thanks for the feedback. what do you mean B version? is that CIMM-1 ?

    CIMM-1 and CIMM-2 are communicating correclty, when both are on the same bus , or even when seperately

    The CIMM device ( 0x57)  doesnt respond ( alone or when connected to the bus with other devices )

    at first I thought it was a bad batch but even when i ordered it again after some time, the devices I got didnt respond as well.  

  • 0 in reply to omer keilaf
    TI__Mastermind 37390 points

    Hi Omer,

    I'm sorry for the confusion. I meant the LM95231BIMM. I checked my old software and the evaluation software. We had the address 0x2B for LM95231CIMM. The datasheet has a typo. Sorry for any inconvenience. I will submit a request to fix this error. Please let me know if this resolve the issue. I am looking forward to hearing from you.

    Aaron

  • 0 in reply to Aaron Heng
    Prodigy 90 points

    OK, thanks for the prompt response , im sure it will do the job 

    I had the feeling it is something like that :)

  • 0 in reply to Aaron Heng
    Prodigy 20 points

    Hello,

    I have a similar issue, and this thread actually confused me more.

    I have bought LM95231CIMM and downloaded the data sheet (rev E) from ti.com. In this document it says that the I2C address for my part is 0xAE, but the device actually responds to 0x56. It doesn't respond either to 0x2B.  I have checked the marking on the part: M AB T23C so it appears that the part is the one I ordered.

    My question is: what id the default address for LM95231CIMM, and how can I make sure that I always order parts that respond to the same slave address?

    Andrei

  • 0 in reply to Andrei Scurtu
    TI__Mastermind 37390 points

    Hi Andrei,

    I’m sorry for all the confusion. TI acquired National Semiconductor several years ago, and after the merger they transferred the datasheet to TI format. There was typo on the SMBus slave ID address. Now, we have a new TI’s template format, and we don’t have any bandwidth to modify at this moment. However, I created the table for you below.

    Hope this helps!

    Aaron

  • 0 in reply to Aaron Heng
    Prodigy 20 points

    Hi Aaron,

        Thanks for the quick reply. The table makes it clear and will also help others that may run into this issue.

    Andrei