KB9028 RT9809F Programming

[sikocan]

Hi all, I'm having trouble detecting a SuperIO. ENE KB9028 using RT809F which says it supports KB9028. it's programmable through SPI Flash. From schematics I have connected the RT809F as follows. Pin 1 CS to > Pin128, Pin 2 DO to > Pin120, Pin 4 G to Ground. Pin 5 DI to Pin119, Pin 6 CLK to Pin126, Pin 8 VCC to Pin9 of SuperIO. I also rotated Pin 2 and Pin 5 thinking I made mistake. It simply doesnt get detected. I checked VCC it gets 3.3 from Power supply when DC jack is plugged in.

I tried timing it like press read then Insert DC jack, or vice versa etc. No luck many times.
What am I doing wrong? thanks
I checked continuity and it's good for all cables from super IO to the RT809F

[sikocan]

Re: KB9028 RT9809F Programming

KSO3=23 KSI4=4 KSI7=1 KSI6=2 KSI5=3
KSO3 is going to Keyboard Pin 23.
KSI4 is going to Keyboard 4 etc.

But where is it going from Keyboard??? Which is which? Clk/DI/DO/VCC/CS etc.

[mielta]

Re: KB9028 RT9809F Programming

Hi
I think you must have like this
https://de.aliexpress.com/item/32995...57776430%21sea

[SMDFlea]

Re: KB9028 RT9809F Programming

kso3=23 ksi4=4 ksi7=1 ksi6=2 ksi5=3
kso3 is going to keyboard pin 23.
Ksi4 is going to keyboard 4 etc.

But where is it going from keyboard??? Which is which? Clk/di/do/vcc/cs etc.

kso3=4 (kbout3) , ksi4=13 (kbout12) , ksi7=16 (kbout15) , ksi6=15 (kbout14) , ksi5=14 (kbout13)

[sikocan]

Re: KB9028 RT9809F Programming

Ok I think I found it
KSO3 GROUND
KSI4 CS/CE
KSI5 CLK
KSI6 DI
KSI7 DO
If this is correct, I still can't detect it

What do I do with VCC? I can see SuperIO Gets turned on due to 3V AW is present so I don't think I need to connect. Any advice?

[sikocan]

Re: KB9028 RT9809F Programming

kso3=4 (kbout3) , ksi4=13 (kbout12) , ksi7=16 (kbout15) , ksi6=15 (kbout14) , ksi5=14 (kbout13)

Hmm.. Vinafix said differently then yours.

Regardless - if I went with your pin layout, where do they connect to???
CS/Ground/DI/DO/CLK
Please I need to learn/understand this. Already spent 4+ hrs.

[SMDFlea]

Re: KB9028 RT9809F Programming

similar to this https://www.laboneinside.com/how-to-...b9012-io-chip/

[sikocan]

Re: KB9028 RT9809F Programming

I don't know if it makes sense but thin Pin count is 28. Pin 23 from top and bottom, both are over 3V - how can that be for the ground?

Your recommendation of KBOUT3 is 3.69V from one side and 3.3 from other side, if you count otherway. Just in case I got counting the wrong way, both are above 3V. What am I missing here?

[sikocan]

Re: KB9028 RT9809F Programming

Do I still need to connect 3.3V to Pin 8/VCC? I tried with and without, no difference. So confusing.

[gurangax]

Re: KB9028 RT9809F Programming

Do I still need to connect 3.3V to Pin 8/VCC? I tried with and without, no difference. So confusing.

Did you solve this?

[sikocan]

Re: KB9028 RT9809F Programming

Yes. YouTube deleted 2400 plus videos, once recovered you can watch. SureCanDo YouTube

[sikocan]

Re: KB9028 RT9809F Programming

https://odysee.com/@SureCanDo:4/how-...using-rt809f:f

Watch there.

[gurangax]

Re: KB9028 RT9809F Programming

https://odysee.com/@SureCanDo:4/how-...using-rt809f:f

Watch there.

Thanks for the video. I actually already done this with a ch341a programmer and KB9012 chip. But now I am trying with the same programmer with a KB9028 chip. I cant find schematic for the board yet so I might end up removing the chip and manually trace the lines to the keyboard connector.
its actually kb9028G chip so that explains why I need to remove the chip.