PLL-IC's
Clock Generators
ICS 9148-08

ICS 9248-99

ICS 9250-10

ICS 9250-38

ICS 950201

Cypress CY28341/CY28341-2
DC/DC Converters
Semtech
SC1164 & SC1165
 
Harris/Intersil
HIP6021
 
 SC1164 & SC1165 - DC-DC Converter Mod
 
Warning: If you are here then you agree that I cannot be held at fault should you damage your hardware. This guide has been tested by myself and is known to work.

Ok...... Now on with the info! This is a mod guide to the Semtech SC11654 & SC1165 DC/DC Converter that is used on the Trigem Florida C/TG/TGA motherboards...however the info here should work no matter what motherboard you have as long as you have the SC1164/SC1165 DC/DC Converter. This is so you can manually set the CPU core voltage so that you can push the cpu a little farther...I will not explain how raising the voltage will help with stability/overclockablity of a CPU due to there are many people who have covered this topic already so it would be easier
for both you and me if you just go to Google and search for an article that covers this.

This is design to be used with the ICST 9148-08 overclock found on the Trigem Florida C/TG/TGA motherboard.


Tools Needed:
1x Soldering Iron
1x New very small/fine tipped solder tip
1x Some solder lead
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 you're discharged of any static electricity and wear an anti-static wrist strap.

It should be noted I have tested this on a Florida TG Rev. C that has the Semtech SC1164 - DC/DC Converter. If you do this and also find it to work please email me at:
enigmadeadsouls at yahoo dot com (replace "at" with "@" and "dot" with "." I do that so the spam bots do not pick up my email address).

Send me pictures (keep them small) of your modded SC1164 & SC1165 DC/DC Converter and give me your website info if you wish for me to post it at the bottom of this page.

Here are some Images of the supported voltages of the HIP6021 DC/DC Converter.

SC1164 & SC1165 DC/DC Converter Voltage Table

As you can see it supports core voltages of 1.3v to 3.5v.
Note: the one listed as all 1's with the voltage of 0 does just that. It has an output of 0 volts.

Here is a pin-out image of the SC1164 & SC1165 DC/DC Converter.

SC1164 & SC1165 DC/DC Converter Pin-Out

Just your standard 28pin SOIC.

Ok I'm going to give some examples of two mods... 2.10v and 2.50v.. from these I would expect you to get the idea and figure out how to set other voltages. I would recommend disconnecting all the "VIDx" pins (pins 18-22) from the motherboard and connecting them to wires with a jumpering design at the end of the wire then a connection to ground.. that way to quickly set 0 you would just pop on a jumper and to set 1 you would just remove the jumper. It would look sort of something like this...

Jumpers

Here's what 2.10v would look like.

SC1164 & SC1165 DC/DC Converter at 2.10V

As you can see Pins 18,19,20,21/VID4,3,2,1 are open (1) while Pin 22/VID0 are connected to Pin 1/AGND (Ground) making them a closed (0).

Here's what 2.50v would look like.

SC1164 & SC1165 DC/DC Converter at 2.50V

As you can see Pins 18,19,21/VID4,3,1 are open (1) while Pin 20,22/VID2,0 are connected to Pin 1/AGND (Ground) making them a closed (0).

NOTES:: ALWAYS make sure the computer IS OFF before changing the core voltage. NOT doing so MAY toggle the PGOOD signal and trigger the over-voltage protection causing the machine to turn off.


Written at: 17:21 PM EST - Revision 0
Written on: Monday, January 06, 2003 - Revision 0
Written by: Enigma Deadsouls
Website: http://www.geocities.com/enigmadeadsouls


Names/Info from people who have emailed me their test results:
Tested by Enigma Deadsouls on a Trigem Florida TG Rev. C and worked.
 

         
WARNING: Always use Rosen core soldering lead not Acid core!
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