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.

AM3358: Added or removed contents in Rev.K Datasheet

Guru 15520 points

Part Number: AM3358

Hi,

In AM335x Rev.K datasheet, many contents have been added or removed from Rev.J datasheet.
My customer have following questions.

Q1.
In Rev.K datasheet page.9 Table 3-1, the value of "DEV_FEATURE register" have been added.
And it said, see the TRM for more details about the DEV_FEATURE register.
In AM335x TRM, there are session about DEV_FEATURE register but no details.
We want to know the meanings of the DEV_FEATURE register value listed in datasheet Table3-1.
Could you provide us the details of each bit fields of this register?

Q2.
We have question about the IBIS model.

gpmc_ad[15:0] Transition time have been removed from the
"Table 7-32 GPMC and NAND Flash Switching Characteristics - Asynchronous Mode"
in Rev.K datasheet page.145.

Could we keep using the same IBIS model which we already using before the datasheet changed from Rev.J?
Or are there plan to release the new IBIS model related to the changes of the datasheet and
we need to use the new model?

Q3.
Transition time parameter of SDA and SCL have been removed from the
"Table 7-72. Switching Characteristics for I2C Output Timings".

The provision have been removed from the datasheet(rev.K),
but could we think that the max output transition timing are the same as the timing written in rev.J datasheet?

Q4.
"CARRIER TYPE" have been added in Rev.K datasheet page.235 "Figure 8-1. AM335x Device Nomenclature".
Blank = Tray, R = Tape and Reel.
But from TI web site, it seems that all part number which have "R" in the end of the number are not available now.
Are customer available to oder the tape and reel carrier type?

best regards.
g.f.

  • Hi g.f.,

    Q1. The DEV_FEATURE register simply indicates which variant of the AM335x family you have.

    Q2. There are no plans to release a new IBIS model. You can continue using the same IBIS model that you have been using.

    Q3. I am looking into this question and will respond separately.

    Q4. The tape and reel variant is not stocked in the TI store. However, you should still be able to order it from a distributor.

    Regards,
    Melissa
  • Hi Melissa,

    Thank you for the reply.
    I understood about Q1, Q2, and Q4.

    Do you have any update for Q3?

    And I have an additional question.
    I understand that input rising/falling transition time for interfaces will be
    publish again in next revision of datasheet.
    I want to know the reason why output rising/falling transition time for interfaces
    have been removed from current datasheet(rev.k) because I need to explain to my customer.
    If possible, could you please tell me about the reason in details?

    best regards,
    g.f.
  • Hi Tashiro-san,

    We feel that the IBIS models provide a more accurate representation of the output rise and fall times, as these parameters are system dependent. Hence, these parameters were removed from the datasheet, and we recommend using the IBIS models if these parameters are needed.

    Regards,
    Melissa
  • Hi Melissa,

    Thank you for supporting me.
    Now, I understood.

    best regards,
    g.f.