Information on PMIC RC5T619

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sobs
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Information on PMIC RC5T619

Post by sobs »

Hello. I have a board Odroid W rev0.3. An power chip accidentally burned out by input. I bought a new one, soldered it and now when I turn it on, the output of the LDO is 0.9V. I have a circuit board that indicates which voltages should be issued, there is an I2C programmer, but there is no chip register map. Could you give a datasheet to the microcircuit, where the parameters of the I2C microcircuit are indicated, or say what address you need to record so that the microcircuit at the start produces the necessary voltage, or bin file? I'd love to launch a board.
Thanks!

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Re: Information on PMIC RC5T619

Post by odroid »

Ricoh didn't disclose a full manual publicly. You might need a NDA with them to get it.

But the RC5T619 I2C register map existed in this Linux Kernel branch.
https://github.com/hardkernel/linux/tree/odroidw-3.12.y

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Re: Information on PMIC RC5T619

Post by Badger101 »

Sorry for replying to an old thread for a discontinued board!

However I have damaged the PMIC on my Odroid W which has been running for years after a re-power.

I was looking to see if I could bring it back to life as a project but have a few questions:
Can it be programmed in-situ, or does it need to be done off of the board (can the kernel branch do it linked above)?
I take it the register settings are non-volatile, or is it set up every time?
Are the schematics still available?

Any help would be appreciated! How was it done when manufactured?

Thanks!

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Re: Information on PMIC RC5T619

Post by odroid »

It's been almost 10 years since we designed it, so I honestly can't remember.
And about 5 years ago, the server storage device broke down, and some of the old data was damaged.

As far as I recall, the register settings are volatile and the device driver set it up every booting time.
Are you going to replace the damaged PMIC by yourself?

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Re: Information on PMIC RC5T619

Post by Badger101 »

Thanks for your reply!
Yes, I'll replace the PMIC - I work with this sort of stuff most days as part of my day job.

So as you recall, all that is needed is to replace the PMIC and it will be set up at boot (nothing needed to be done externally)?
Last edited by Badger101 on Tue Jul 18, 2023 10:17 pm, edited 1 time in total.

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Re: Information on PMIC RC5T619

Post by mctom »

Most PMICs have volatile registers as far as I know, so I would expect that replacing this chip might work without any extra steps.
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