LMK04828: SPI usage

Kaushal C

Part Number: LMK04828
Other Parts Discussed in Thread: LMX2594

Tool/software:

Dear team,

We are using LMK04828 and ADC IC in our custom board. Both are controlled through single SPI from processor with two different chip select. Is it ok to use single SPI controller to two slaves or LMK requires any dedicated SPI.

Regards,
Kaushal

7 days ago

0 William Pfennigwerth 6 days ago

TI__Expert 7191 points

Hello,

I will get back to you next week.

0 Kaushal C 4 days ago in reply to William Pfennigwerth

Intellectual 330 points

Hi William,

This is little critical, can you check on this soon

Regards,
Kaushal

+1 William Pfennigwerth 3 days ago in reply to Kaushal C

TI__Expert 7191 points

Kaushal,

Yes, you can share SPI Clock and Data lines.

Regards,

Will

0 Kaushal C 2 days ago in reply to William Pfennigwerth

Intellectual 330 points

Hi Will,

Thanks for the confirmation for the above request. One more doubt is, what if we share the SPI with LMK04828 and LMX2594 will that cause any issue.

Regards,
Kaushal

0 vicente flores prado 2 days ago in reply to Kaushal C

TI__Genius 15231 points

Hi Kaushal,

As will mentioned both data and clk can be shared but each device requires its own #CS signal.

Regards

Vicente

0 Kaushal C 9 hours ago in reply to vicente flores prado

Intellectual 330 points

Hi Vicente,

Below E2E link says there will be issue related to reading through SPI

https://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/1274601/lmx2594-lmk-and-lmx-spi-read-issue

Can you confirm this

Regards,
Kaushal

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LMK04828: SPI usage