<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">fyi<br><div><br><div>Begin forwarded message:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#000000" style="font: 12.0px Helvetica; color: #000000"><b>From: </b></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica">Andy Green <<a href="mailto:andy@openmoko.com">andy@openmoko.com</a>></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#000000" style="font: 12.0px Helvetica; color: #000000"><b>Date: </b></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica">February 8, 2008 1:48:43 AM GMT+08:00</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#000000" style="font: 12.0px Helvetica; color: #000000"><b>To: </b></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica"><a href="mailto:ALLEN_CHANG@fic.com.tw">ALLEN_CHANG@fic.com.tw</a></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#000000" style="font: 12.0px Helvetica; color: #000000"><b>Cc: </b></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica"><a href="mailto:matt_hsu@openmoko.org">matt_hsu@openmoko.org</a>, <a href="mailto:werner@openmoko.org">werner@openmoko.org</a>, <a href="mailto:TIM_LEE@fic.com.tw">TIM_LEE@fic.com.tw</a>,<span class="Apple-converted-space"> </span><a href="mailto:wolfgang@openmoko.com">wolfgang@openmoko.com</a>, <a href="mailto:TONY_TU@fic.com.tw">TONY_TU@fic.com.tw</a>,<span class="Apple-converted-space"> </span>Samuel Ortiz <<a href="mailto:sameo@openedhand.com">sameo@openedhand.com</a>></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#000000" style="font: 12.0px Helvetica; color: #000000"><b>Subject: </b></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica"><b>Re: Suspend mode<span class="Apple-converted-space"> </span>measuring</b></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div> </div>-----BEGIN PGP SIGNED MESSAGE-----<br>Hash: SHA1<br><br>Somebody in the thread at some point said:<br><br><blockquote type="cite">Therefore, I do some research in S3C2442 GPIO configure.<br></blockquote><br>Hi Allen -<br><br>Roundup of resistor value changes from my side for consideration.<br><br>0) Can we eliminate R1519 / TX_MODEM pullup.<br><br>1) I went looking for more 10K resistors, I found some at the end on the<br>WLAN SDIO bus. I wonder if the protocol really needs 10K here or if we<br>can increase R7904 - R7907 to, eg, 47K. They're mainly used to stop the<br>bus floating when nobody drives AFAIK so it should be fine.<br><br>2) I looked at other SDIO designs and they do not pull up the SD / SDIO<br>clock line. Can make R7909 NC?<br><br>3) R1710 / R1741 is a bit of a strange pair. R1741 should be NC? Or is<br>there a bigger story there?<br><br>4) Just a reminder about PMU I2C pullups R1707 and R1708 need to be<br>reduced to, eg, 22K or 10K to improve signal quality.<br><br>5) Another issue I brought up some time ago, we would stand a better<br>chance to run the Glamo SD interface at 25MHz if we reduced the<br>resistors R7503 - R7508 from 100R to say 75R -- it shouldn't really<br>impact EMC too much.<br><br>Also I didn't read about the configuration of the "5mA suspend" device<br>used in your testing, does it include Bluetooth and WLAN modules?<br>Hopefully it did include them, so it can be interesting to test suspend<br>current with and without WLAN module, for example. I see we can't<br>switch WLAN power externally but still it is interesting.<br><br>- -Andy<br>-----BEGIN PGP SIGNATURE-----<br>Version: GnuPG v1.4.7 (GNU/Linux)<br>Comment: Using GnuPG with Fedora - <a href="http://enigmail.mozdev.org">http://enigmail.mozdev.org</a><br><br>iD8DBQFHq0R6OjLpvpq7dMoRAinZAJ4klHFFiP8q+SDoJJf4Ryrcp1fzrQCfadQ/<br>uIn9mRbmc9tZk/xp7ZA9xuA=<br>=sLOk<br>-----END PGP SIGNATURE-----<br></blockquote></div><br></body></html>