• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 16 subscribers
  • Views 723 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

TRPGR30ATGA BCC value

Igor Gorelik
Prodigy 200 points
Other Parts Discussed in Thread: TRPGR30ATGA

Hello,

My customer uses TRPGR30ATGA 23-mm Low-Frequency Glass-Encapsulated Transponder.

It has 80 (64-bit unique ID + 16-bit BCC) memory bits.

In the past the customer could read ID correctly and BCC bits were "0".

In new batch the value of BCC bits is different from "0" and it makes some problem when they read it by their reader.

Do you know about any change here?

What is the solution here?

 Igor

  • 0
    TI__Guru* 91086 points
    Igor - the customer must be mistaken
    The LF tags will return:
    16 pre-bits (these are 0x0000)
    1 start byte (will equal 0x7E)
    8 bytes of tag data (this is the serial #)
    2 bytes of CRC-16, over the tag data bytes (not ever zero)
    1 stop byte (will equal 0x7E)
    16 end bits

    can you ask them to double check what they are receiving please? because the CRC bytes they are asking about will be different and i don't think ever a value of 0x0000 (i think only mathematically possible if the serial # was all zeros and this would only be one tag in the world, made over 25 years ago, and most likely the first one was not serial # 0)