LMK04828 4-wire SPI

toshi-e2e

Other Parts Discussed in Thread: LMK04828

Hi all,

In case of 4-wire SPI mode of LMK04828,
when LMK04828 executes the readback,
is the readback data output from SDIO pin as same as 3-wire SPI mode?

Or is SDIO pin set only to the input mode?

Regards,
Toshi

over 10 years ago

0 Arvind Sridhar over 10 years ago

TI__Mastermind 24205 points

Hi Toshi,

Any of the status pins on LMK0482x can be configured for readback in 4-wire SPI mode (LMK04828 Datasheet, Page 33). SPI_3WIRE_DIS (Reigster 0, Bit4) can be set to 1 to disable 3 Wire Mode. The timing for the 4-wire readback is similar Figure 1 (for 3-wire readback on SDIO). In 4-wire mode, SDIO is an input pin only.

Regards

Arvind

0 toshi-e2e over 10 years ago in reply to Arvind Sridhar

Genius 4850 points

Hi, Arvind-san,
Thanks for your reply.
I understood that SDIO is an input pin only when 4-wire mode.

Thanks and regards,
Toshi

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LMK04828 4-wire SPI