• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 29 subscribers
  • Views 884 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.

Datasheet for Fan Controller-Capable LM4F

Alex Ionescu
Prodigy 20 points

Hi!

I am working with a TI Stellaris/Tiva Blizzard Device that is part of the new SMC Controller Series (LM4FSx). The Blizzard devices have support for 4-wire Fan Control, and the base address is in the hw_map.h header: 

FAN0_BASE 0x40084000 // Fan Control (FAN)

As well as the Fan APIs in the ROM Guide/Headers:

ROM_FANTABLE

However, I am unable to find a datasheet for the LM4FSx series, and all the other Blizzard-Class device datasheets list 0x40084000 as "Reserved". So far, I've been figuring out the registers by using the ChromiumOS Source Code from Google;

https://chromium.googlesource.com/chromiumos/platform/ec/+/master/chip/lm4/fan.c

But having official TI documentation would be preferred.

Thank you for the assistance!

  • 0
    Guru 117855 points

    That part no. does not, "readily" compute - thus likely a "special/custom."  Often these are reserved for key (i.e. large clients - and/or special programs)  While far from certain - this seems reasonable...

    If you must have that capability it seems best that you migrate to newer devices (i.e. those right here - this forum) and explore datasheets to verify that functional capability as well as necessary technical detail...

  • 0 in reply to cb1_mobile
    Prodigy 20 points

    cb1_mobile said:

    That part no. does not, "readily" compute - thus likely a "special/custom."  Often these are reserved for key (i.e. large clients - and/or special programs)  While far from certain - this seems reasonable...

    If you must have that capability it seems best that you migrate to newer devices (i.e. those right here - this forum) and explore datasheets to verify that functional capability as well as necessary technical detail...

    Here's the part family: http://www.ti.com/lit/wp/spmy009/spmy009.pdf

    Also the official ROM Guide does talk about "Fan Controller" APIs and documents them -- is there a 'newer' and/or public data sheet that covers the Fan Controller Registers, if the LM4FS19H5BBFIG and friends are "reserved"?

  • 0 in reply to Alex Ionescu
    Guru 117855 points

    Alex Ionescu said:
    is there a 'newer' and/or public data sheet that covers the Fan Controller Registers

    Suspect that your search/investigation of such (among device inventory - this forum) would be as effective as mine.  Perhaps others may note - respond.

    Would be useful to learn the, "how/where you acquired such "unusual" device?"  Original recipient should have received, "best data dump" - I'd bet that all followers have more overgrown & twisty (i.e. less welcoming) path...