[lm-sensors] dme1737 datasheet

Juerg Haefliger juergh at gmail.com
Sat May 26 19:34:39 CEST 2007


Jeremy,

Sorry for the late response. Unfortunately SMSC never responded to my
inquiry. I can tell you that the DME1737 is not fully compatible (in
the area you're interested in) to any of the other SMSC devices that
have publicly available datasheets.

Any ideas how to proceed?

...juerg



On 4/8/07, Juerg Haefliger <juergh at gmail.com> wrote:
> Hi Jeremy,
>
> Let me check with SMSC if I can provide the information.
>
> ...juerg
>
>
>
> On 4/8/07, Jeremy Jackson <jerj at coplanar.net> wrote:
> > Hi,
> >
> > Given the NDA nature it's tricky trying to support the watchdog and
> > serial port for LinuxBIOS.  I think I can fly blind using parts of
> > publicly available datasheets, but it would save me time if I knew the
> > Logical Device #'s of the various superio modules, ie index 7 values
> > needed to address parport, serial 1/2, fdc, etc. config registers.
> >
> > Any chance someone can hint at what these might be, or a publicly
> > available datasheet that's closest:
> >
> > http://www.smsc.com/main/datasheet.html
> >
> > Ok so they all have serial port as Logical Device 4, so I've summarized
> > what the watchdog uses below.
> >
> > ISA bus types - Config index/data registers at 0x3F0 or 0x370
> >
> > watchdog uses configuration space of logical device
> >
> > FDC37b727 Logical Device 8 - Aux I/O 0xF1 - 0xF4 watchdog *
> > FDC37b78x Logical Device 8 - Aux I/O 0xF1 - 0xF4 watchdog *
> > FDC37c665GT very different - no logical devices
> > FDC37c669 very different - no logical devices
> > FDC37c672 Logical Device 8 - Aux I/O 0xF1 - 0xF4 watchdog * no
> > WDT_TIME_OUT register
> > FDC37c78 FDC only
> > FDC37c93x Logical Device 8 - Aux I/O 0xF2 - 0xF4 watchdog *
> > FDC37M707 Logical Device 8 - Aux I/O 0xF1 - 0xF4 watchdog *
> > FDC37m817 Logical Device 8 - Aux I/O 0xF1 - 0xF4 watchdog *
> > FDC37n769 very different - no logical devices
> >
> > * can be configured to allow access to some watchdog registers while in
> > run mode
> >
> > LPC bus types - index/address registers 0x2e/0x2f or 0x4e/0x4f
> >
> > watchdog uses offset from decoded address set by logical device Primary
> > Base Address
> >
> > LPC47b272 Logical Device A - Runtime reg offset 0x52 - 0x55 watchdog
> > LPC47m10x no WDT
> > LPC47m112 no WDT
> > LPC47m172 no WDT
> > LPC47S45x Logical Device A - Runtime reg offset 0x52 - 0x55 watchdog
> >
> > I'm leaning towards DME1737 being the same as these LPC parts.
> >
> > --
> > Jeremy Jackson
> > jerj at coplanar.net Email/Jabber/Google Talk/MSN
> > (519)489-4903
> > Coplanar Networks
> > http://www.coplanar.net
> >
> >
>




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