• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 398 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.

TLIN1441-Q1: when used in spi mode, i send 0,2,4,6,8,10,12,14,16 to read reg0-reg8, i got the result as follows.

ying li
Prodigy 70 points
Part Number: TLIN1441-Q1

  • 0
    TI__Mastermind 26806 points

    Ying,

    Please take a look at the "Programming" section of the device data sheet for information on SPI interface with this device.

    In this case, please remember to send the address for each read command per Figure 9-12.

    Best,

    Danny

  • 0 in reply to Danny Bacic
    Prodigy 70 points

    Hi Danny,

    Thank you so much for your kindly reply!

    In fact, figure 9-12 is exactly what makes me feel confused.  Accorddint to this figure, if I want to read h'0[7:0], I need to send address(0) + read (0). And I also need to send 8'0 to supply clock of response following. 

    When I send 8'0 + 8'0, I'm supposed to get 0x54 at the last 8'0. And when i send 8'0 + 8'0 + 8'0 + 8'0, I'm supposed to get two 0x54. 

    But here's what i have got(0x45,0x4c,0x49).

    Could you please help me to get the right result ?

    And does TLIN1441-Q1 support  continuous transmission？

  • +1 in reply to ying li
    TI__Mastermind 26806 points

    Hi Ying,

    To end the first SPI transaction, nCS should go high again. You can bring nCS low again to issue the next read command.

    From what I can see in your image, it doesn't look like nCS is changing during this time. Could you give this a try?

    Best,

    Danny

  • 0 in reply to Danny Bacic
    Prodigy 70 points

    Hi Danny，

    I tried to change nCS after every transation, and i got the right response.

    Your advice is really helpful ! Thank you very much!

    Best regards, 

    Ying