SBG901 diff model

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delorean
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Joined: Fri May 11, 2007 5:04 am

SBG901 diff model

Post by delorean » Sat Aug 10, 2013 7:38 am

Hi all,
Sorry for opening a new thread about sbg901 but the others are closed and my SBG901 is different. It does not have a jtag port.

here is a pic of the mb:

https://www.dropbox.com/s/a7nlp5q2353ye ... .19.28.jpg

Any idea on how to hook this up?

Regards,
Delorean

usbbdm
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Post by usbbdm » Sat Aug 10, 2013 8:40 am

Looks like it has the SPI flash.

delorean
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Joined: Fri May 11, 2007 5:04 am

Post by delorean » Sat Aug 10, 2013 11:48 am

I think it does. Where can I point at to wire it?

Regards,
Delorean

CAPONE
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Post by CAPONE » Sat Aug 10, 2013 5:26 pm

delorean wrote:I think it does. Where can I point at to wire it?

Regards,
Delorean
the wiring will be the same as for the SB6120. I don't know how many times I have mentioned this before. AN SPI flash is an SPI Flash. Whether in an SB6120, UBEE or your SBG901, It uses the same wiring. You will have to provide power to the Flash directly if you don't know where the ISP Point is.
"If you give a man a fish you feed him for a day. If you teach a man to fish you feed him for a lifetime."

MrRogers
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Post by MrRogers » Sat Aug 10, 2013 11:10 pm

I find it more challenging and rewarding to find the ISP point, that way you can either save it for future reference or share the ISP point (if it is not publicly known) with the rest of the members.

To each his own I guess. The ISP point on most cable modems is relatively easy to figure out if you give yourself a few minutes to search around the board for it. The 3.3v method does work but again, alot more self gratification to find the ISP point to simplify it for future reference :)
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d0
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Post by d0 » Mon Aug 12, 2013 5:28 pm

Could you explain further how someone should go about finding the ISP point? Besides randomly testing different components and resistors which could lead to shorting the board, how else would someone find the ISP point easiest?

CAPONE
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Post by CAPONE » Tue Aug 13, 2013 5:44 am

ak4d7 wrote:Could you explain further how someone should go about finding the ISP point? Besides randomly testing different components and resistors which could lead to shorting the board, how else would someone find the ISP point easiest?
There may be a better way, but Most of the ISP Point I know have been found by taking that Risk of Shorting the Board. If you have many of them then IMHO its worth a shot. If you don't want to Risk that, You can always supply external power to the SPI flash and read and program the flash without Risking the Modem.
"If you give a man a fish you feed him for a day. If you teach a man to fish you feed him for a lifetime."

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