[En-Nut-Discussion] Ethernut 2

[Pearless]

Hi People,

 

I am redesigning an EtherNut 1.3 daughter board (Quad UARTS,
RS485/232/IrDA/Flash RAM, RTC clock/calendar, etc etc) to work with the
newer EtherNut 2.

 

As I am not sure my previous posting got through, I’d like to summarise my
questions about the EtherNut 2:

 

PE6 (INT6) is NOT used and can by used by my own design.

Only RESET\ and not RESET goes to the expansion header (any plans to change
this???)

I can use 0xFE00 – 0xFEFF to memory map my own design (if not, what ranges
are available?).

 

And lastly, the daughter board can draw at a peak, 5v up to 1.7 amps.

 

In the past, the daughter board has a 5v 3A power supply that supplies the
5v to the EtherNut 1.3 via the expansion header (we remove the 5v regulator
from the EtherNut).

 

Is it possible to upgrade the LM1086(1.5A) to a LM1085 (3A) or a LM1084(5A)?

 

What else would need to change (F1 to 3A or 5A)?

 

Would this work with the current board design (track width, vias etc)?

 

I guess this will become more of an issue as more and more daughter /
expansion boards are developed!

 

The other alternative is to put a LM1084 on the daughter board, and removing
the LM1086 from the EtherNut, which would not be my preference.

 

Cheers Douglas


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