R70/R71 on debug v3 board ?

Werner Almesberger werner at openmoko.org
Wed Feb 13 11:25:41 CET 2008

ALLEN_CHANG at fic.com.tw wrote:
>  R70 and R71 don't mount on debug v3 (whatever version).

Okay, we need to fix that.

>  These two resistors are used for 3.3V bias to 1.8V.
>  I check M58WR016KB's datasheet and NOR FLASH can program and erase on
> VPP= 1.3V~3.3V. Therefore, we don't need these resistors.

What we don't need is the voltage divider (and particularly not with
1% accuracy ;-)

However, we still need to pull nNOR_WP up, for GTA02. As a general
precaution, I think something like 10k would be better than 0R.

So we should drop R70 (i.e., do nothing there) and put something on
R71. And we also have to make sure that this change is made on all
v3 boards that ship for/with GTA02 devices.

- Werner

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