Read the absolute value from hall sensor to DSP using BISS communication

Qi Liu

Other Parts Discussed in Thread: TMAG5170, TMAG5273

Hi, support team

My customer has the questions as follow:

Currently I am interested in the hall sensor.
Specifically, I want to read the absolute value from hall sensor to DSP using BISS communication.
As I know hall sensor has a logic level of 5V and the DSP that I use has a logic level of 3.3V.
I want absolute data transmission with 2m cable distance.
I am thinking of using RS422/LVDS to transmit over this distance.
Can you help me choose which IC or use RS422/RS485 is appropriate or not.

Thanks so much.

Best regards,
Yuki

over 3 years ago

0 Hao L over 3 years ago

TI__Mastermind 25705 points

Yuki,

I think it's possible. You can take a look at this TI design.

https://www.ti.com/lit/ug/tidu794a/tidu794a.pdf

The new RS-485 products can be found in this e2e post.

(+) [FAQ] What're the recently released RS-485 transceivers in TI? - Interface forum - Interface - TI E2E support forums

0 Thanh Pham over 3 years ago

Thanks for the reply. I have a question: my hall sensor supports both BISS, SPI, I2C communication. As I know, using BISS communication with DSP is quite complicated. Can you suggest me to use SPI or BISS to read the value from hall sensor to DSP?

0 Hao L over 3 years ago in reply to Thanh Pham

TI__Mastermind 25705 points

I'm not familiar with the value from hall sensors. I've notified the expert to answer your questions.

0 Josh Wyatt over 3 years ago in reply to Hao L

TI__Guru* 91206 points

moved to Hall Sensors team

0 Arjun_Prakash over 3 years ago in reply to Josh Wyatt

TI__Expert 7599 points

Hello User,

We recently released TMAG5170 and TMAG5273 that are SPI and I2C compatible device. Could you take a look at these devices and let us know if you have any specific questions on the interface.

Thanks!