USB on the wrt320n

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snooze7555
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PostPosted: Tue Oct 13, 2009 13:27    Post subject: USB on the wrt320n Reply with quote
Hello,

I now that the wrt320n use the bcm4717. This chip has a USB on board. I looked on the Broadcom site, but i don't find any schematic. I there someone that now the schematic.

http://www.datasheetdir.com/go/-bcb-cjb-xcczbb.pdf


thanks

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Masterman
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PostPosted: Tue Oct 13, 2009 18:33    Post subject: Reply with quote
Hope this helps:

http://www.broadcom.com/collateral/pb/4716_4717_4718-PB03-R.pdf

320N.png
 Description:
 Filesize:  1.33 MB
 Viewed:  25768 Time(s)

320N.png

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Last edited by Masterman on Tue Oct 13, 2009 18:40; edited 1 time in total
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snooze7555
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PostPosted: Tue Oct 13, 2009 18:37    Post subject: Reply with quote
Masterman wrote:
Hope this helps:

http://www.broadcom.com/collateral/pb/4716_4717_4718-PB03-R.pdf


Thats the same as my link.

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But Thanks
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snooze7555
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PostPosted: Wed Oct 14, 2009 11:57    Post subject: Reply with quote
Nobody


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pictureaday
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PostPosted: Tue Mar 02, 2010 23:34    Post subject: thread resurrection! Reply with quote
Sorry to bring back this old thread, but after searching I couldn't find anything else on this matter. Has anyone made any progress in this department?

If not, I might be interested in doing so, I have the tools to open one, a multimeter to test, and mediocre soldering skill.

Oh and LONG time lurker, first time poster!
Thanks Smile
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Middystyle
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PostPosted: Tue Jun 29, 2010 15:07    Post subject: Reply with quote
Any found out how and what to do to build an USB port on a WRT320n, because I want it also, if there is a possibbility to do so...?
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Krasny
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PostPosted: Sun Aug 15, 2010 20:21    Post subject: Reply with quote
is there any progress in this matter?

Thanks!
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ka4o_pi4a
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PostPosted: Wed Jan 11, 2012 19:48    Post subject: Reply with quote
Any progress ? If somebody know how to do it please tell us Very Happy
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beatfreak
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PostPosted: Fri Jun 26, 2015 16:53    Post subject: Reply with quote
lets get this going
request for already broken routers

i am currently trying to get at least one intact router for less than 10$ so that it doesn't hurt too much when desoldering the BCM4717 and sanding down the PCB area to get a better picture of the copper traces.

supposedly there is a router called AirTies Air 4452 which has also the BCM4717 AND an USB Port installed. I am also trying to get one of these to hopefully be able to follow the traces to find the usb0_dp and usb0_dn contacts of the 4717.
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beatfreak
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PostPosted: Sun Sep 04, 2016 12:59    Post subject: Reply with quote
this is it.
i finally found a airties 4452, i can confirm that it runs on a BCM4717 AND has a functional USB Port.


The usb data lines run directly to the processor without any additional components (except for one ferrit housed coil thing)
and the pins are
usb0_dn : 2K (K2)
usb0_dp : 2L (L2)

measuring 1.3 Ohm from stripped usb cable (plugged in)to these pads.

now its time to kill a wrt320n Smile any1?

worst case scenario (if there are no connections to these points on the wrt320n/e2000 board) would be soldering to the pins on processor-pcb

BCM4717_USB_b.png
 Description:
bottom side of the pcb
 Filesize:  2.58 MB
 Viewed:  14274 Time(s)

BCM4717_USB_b.png
BCM4717_USB_c2.png
 Description:
BGA plates
 Filesize:  802.03 KB
 Viewed:  14275 Time(s)

BCM4717_USB_c2.png
BCM4717_USB_d.png
 Description:
top right corner is the usb connector
 Filesize:  2.82 MB
 Viewed:  14275 Time(s)

BCM4717_USB_d.png

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WRT320n -> E2000
Serial access via CP210x USB-TTL
running DD-WRT v24-sp2 (12/24/10) std-usb-nas - build 15962
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beatfreak
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PostPosted: Mon Sep 05, 2016 7:37    Post subject: Reply with quote
its not looking very good for the topside of the wrt320n pcb
but make a good statement about this we have to desolder one.

BCM4717_USB_a1.png
 Description:
grinded down chip, you see the points for "worst case access"
 Filesize:  1.61 MB
 Viewed:  14232 Time(s)

BCM4717_USB_a1.png
BCM4717_wrt320.jpg
 Description:
BCM4717 on the WRT320n
 Filesize:  354.05 KB
 Viewed:  14232 Time(s)

BCM4717_wrt320.jpg

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Serial access via CP210x USB-TTL
running DD-WRT v24-sp2 (12/24/10) std-usb-nas - build 15962
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BlindWanderer
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PostPosted: Sat Feb 25, 2017 22:06    Post subject: Reply with quote
I take it adding a USB port to an E2000/WRT320N is not going to be a weekend project and shouldn't be attempted by beginners.
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benz0l
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PostPosted: Sat Aug 26, 2023 17:23    Post subject: Reply with quote
BlindWanderer wrote:
I take it adding a USB port to an E2000/WRT320N is not going to be a weekend project and shouldn't be attempted by beginners.

certainly looks like that
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