Warning: If you are here then you agree that I cannot be held at fault
should you damage your hardware as this is untested/unprove content.
Ok...... Now on with the info! This is a super short super simple mod guide
to make a jumper to select between 100MHz/400MHz and 133MHz/533MHz
for a ICS 9250-22 clock generator.
Tools Needed:
1x Soldering Iron
1x New very small/fine tiped solder tip
1x Some solder lead
1x 10K Resistor. If you dont have a 10K resistor around..
Something close to it should work.
1x Something small enough to pull on the small pin of a SMD chip.
Small wires or something to connect pins.
Some free time.
Before doing this you should remove the motherboard from the case and
remove everything from the motherboard (such as cpu and ram and such)
just to be safe and for extra free space. Make sure youre discharged
of any static electricity and wear an anti-static wrist strap.
It should be noted I haven't tested this and it's only theory.
If you test this and find it to work please please email me at:
-e-n-i-g-m-a--d-e-a-d-s-o-u-l-s- -a-t- -y-a-h-o-o- -d-o-t- -c-o-m-
(remove all dashes, replace "-a-t-" with "@" and "-d-o-t-" with "."
I do that so the spam bots do not pick up my email address).
Send me pictures (keep them small) of your moded ICST 9250-22 PLL-IC
and give me your website info if you wish for me to post it at the
bottom of this page.
Here is an Image of the ICST 9250-22 Pin-out.
Here is a picture of the supported clock speeds.
As you can see "SEL 133/100" (Pin 23) is use to pick between 100MHz/400MHz
and 133MHz/533MHz. We will make a jumper for this pin.
Here is a picture of the Mod. See what Ive done is a jumpering setup.
See what you do is disconnect SEL 133/100 (Pin 23) from the motherboard,
then to a wire that which will connect to the center pin in a jumper block.
However you will need to use a 10K resistor somewhere inbetween
SEL 133/100 and the center pin of the jumper block as shown in the picture.
Then you will connect one of the side pins in the block to VDDREF (Pin 4).
Then the last pin to GND (Pin 1).
Red = 1, Blue = 0, Green = SEL 133/100.
To set SEL 133/100 to 1 (133MHz) Jumper the center pin with the VDDREF pin.
To set SEL 133/100 to 0 (100MHz) Jumper the center pin with the GND pin.
You could also just disconnect SEL 133/100 (Pin 23) from the motherboard,
and bend it over to touch VDDPCI (Pin 22) to set 133MHz or bend it to touch
GND48 (Pin 24) to set 100MHz.
Wrote up at: 6:52 PM EST, Monday, October 1st, 2007 - Revision 0
Wrote by: Enigma Deadsouls
Website: http://www.oocities.org/enigmadeadsouls
Names/Info from people who have emailed me their test results:
None at this time.
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any of the info unless you ask me first... however youre free to change text
font,size,color background color/image to match youre site. Youre also free to
remove my navigation bar at the bottom of this page as Im sure it would be
pointless on your site... in other words Im ok with changes as long as its not
to the info unless otherwise aproved by me. Also if you mirror it email me and
give me a link and Ill link to it here.