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Hardware revision 1.3 elaborated?
https://www.fit-pc.com/forum/viewtopic.php?f=11&t=5070
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Author:  deva [ Wed Aug 21, 2013 11:38 am ]
Post subject:  Hardware revision 1.3 elaborated?

I noticed that you just recently updated the hardware of the Fit-PC2i to version 1.3 and I can see you addressed some problems I have been experiencing with the BIOS battery on low power. Great! :-D

Here's the list of changes for reference (from: http://www.fit-pc.com/wiki/index.php/Fit-PC2i_Revisions):
- Ethernet controllers upgraded to Realtek RTL8111F
- USB6 routed exclusively to miniPCIe
- USB5 routed exclusively to P38
- Added 2 pin connector for external CMOS battery
- Added TPM provision
- Removed mechanical holes in P31
- Added low voltage protection circuit
- Improvements in auto-on circuit

What does "USB5 routed exclusively to P38" mean? I have not been able to find any references to the P38 in the schematics.
Can I be so lucky as have gotten my long wished Usb on-the-go connection to the built-in Z530 USB controller (USB1-4 are using an external controller if I recall correctly)?
Why did you add pins for external BIOS battery? Is it now possible to add extra unplugged BIOS lifetime using an external BIOS battery?

Author:  mbirger [ Mon Sep 02, 2013 8:48 am ]
Post subject:  Re: Hardware revision 1.3 elaborated?

Hi Deva,

Please see my answers below:

- USB5 lane routed from Intel SCH chipset to P38 connector -
Schematics capture:
Image

Layout capture:
Image



- Connector for external BIOS battery added in order to support batteries rated for high operating temperatures.

Thanks,
Maxim.

Author:  opencompany [ Tue Nov 05, 2013 1:36 pm ]
Post subject:  Re: Hardware revision 1.3 elaborated?

Hi there.
Could you please provide technical documentation for these changes as well:

- Added low voltage protection circuit
- Improvements in auto-on circuit

Thank you.

Author:  mbirger [ Sun Nov 10, 2013 8:59 am ]
Post subject:  Re: Hardware revision 1.3 elaborated?

Hi,
- Low voltage protection circuit:
The system will shut itself down when power supply goes below 8V.

- Improvements in auto-on circuit:
Stability improvements.

Thanks,
Max.

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