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Original question:

BQ27Z561EVM-011: Time consuming problem of learning cycle procedure.

BQ34Z950: Problem in Completing the Learning Cycle..

Aman Ankit
Intellectual 470 points
Part Number: BQ34Z950
Other Parts Discussed in Thread: BQSTUDIO, BQ20Z65-R1

Dear All,

I am having few problems in completing the learning cycle for BQ34z950. Here are few questions

1) How can ChemId need to be configure in BQ34z950 since it is not available in BQstudio I am using a EVSW (bq EVSW Version: 0.9.90 for bq34z950 v0.02). Please see the attachment of screen sort.

2) Here is the steps I am using.
     a) Send IT enable(0x21) to manufacturer Access. QEN and VOK is HIGH.
     b) Send Reset(0x41) to  manufacturer Access. QEN  is HIGH and VOK is LOW.
     c) Discharge ti Empty and rest Until REST = 1. There is NO REST BIT is BQ34z950. How do I identify that REST is complete?
     d) Charge to FULL see VCT  = 1. There is NO VCT bit the charging status register of BQ34z950. How to see this??
     e) Rest until REST = 1.
     d) Update status will should to change to 5.
     f) Check RDIS = 0. Again There is NO RDIS Bit in BQ34z950 TRF. How to Identify this???
     g) Rest until REST = 1 and Update status = 6.

Please Help me on my above query.

Regards,
Aman.

  • 0
    TI__Guru* 76230 points
    hi Aman,

    1. Can you try using the EVSW for the bq20z65-r1 for this gauge to program the chem id. Make sure to use gpc chem to identify the right chem id for your cells.

    2. ) Send IT enable(0x21) to manufacturer Access. QEN and VOK is HIGH.
    b) Send Reset(0x41) to manufacturer Access. QEN is HIGH and VOK is LOW.
    c) Discharge ti Empty and rest Until REST = 1. There is NO REST BIT is BQ34z950. How do I identify that REST is complete?
    OA: This gauge does not hve the rest flah. Just simply relax for 5 hours after discharge.
    d) Charge to FULL see VCT = 1. There is NO VCT bit the charging status register of BQ34z950. How to see this??
    OA: It doesn't have the VCT either. Relax for 2 hours after charge

    e) Rest until REST = 1.

    d) Update status will should to change to 5.
    OA: Discharge to empty after the rest stage
    f) Check RDIS = 0. Again There is NO RDIS Bit in BQ34z950 TRF. How to Identify this???
    OA: The RDIS is the R_Dis flag
    g) Rest until REST = 1 and Update status = 6.

    thanks
    Onyx