VRM modify ICC_MAX to run high TDC OEM cpu

[RolloZ170]

Strange, when you scan them after running the mod, do they still usually show up?

yes, but if you interupted close of MCP2221a USB device you may not get info.
replug all and tr again.

 

[oddssodds]

yes, but if you interupted close of MCP2221a USB device you may not get info.
replug all and tr again.

OK, that worked. would you run the cmds again to be sure?

 

[RolloZ170]

OK, that worked. would you run the cmds again to be sure?

you can this time, i check programm only if required (PXE1610C can only 14 times programmed)
if the scan showed you the ICC_MAX = 255A they are programmed fine (after AC cycle of server board)

 

[oddssodds]

you can this time, i check programm only if required (PXE1610C can only 14 times programmed)
if the scan showed you the ICC_MAX = 255A they are programmed fine (after AC cycle of server board)

shows this

 

[RolloZ170]

shows this
View attachment 49193

ICC_MAX = FF (hex for 255A)
they are programmed.

 

[oddssodds]

Thanks so much for your support

 

[onokatio]

Just reporting.

It worked on DELL Poweredge C6420 (C6400 Chassis).
PXE1610CDN is located near on fan side. SDC & SDA are extracted to hole but no pin, so you have to solder jumper.
Addresses are 60 and 62.

 

[onokatio]

Also, I rewrite C# code to python code for runnning on macos.

pxe1610c_iccmax.py

pxe1610c_iccmax.py. GitHub Gist: instantly share code, notes, and snippets.

gist.github.com

Now ICC is 255A.

scan

scanning at addr: 60

ReadBlock( Page00,cmdFD,1)=B3
ReadBlock( Page4F,cmd1A,1)=00
ReadBlock( Page4F,cmd32,2)=1504

PXE1610C found at addr: 60
remaining attempts= 0D

ICC_MAX= F000

scanning at addr: 62

ReadBlock( Page00,cmdFD,1)=B3
ReadBlock( Page4F,cmd1A,1)=00
ReadBlock( Page4F,cmd32,2)=1504

PXE1610C found at addr: 62
remaining attempts= 0D
ICC_MAX= F000

dry run

Using 7-bit I2C address: 0x60
ReadBlock( Page00,cmdFD,1)=B3
ReadBlock( Page4F,cmd1A,1)=00
ReadBlock( Page4F,cmd32,2)=1504
PXE1610C found: starting modd
set smb_password=OK
ICC_MAX=F000
old remaining attempts= 0D
Write ICC_MAX=OK
set nvm_password=OK
upload_cfg_send_byte=OK
clear nvm_password=OK
new remaining attempts= 0C
PXE1610C modd successful

write

Using 7-bit I2C address: 0x60
ReadBlock( Page00,cmdFD,1)=B3
ReadBlock( Page4F,cmd1A,1)=00
ReadBlock( Page4F,cmd32,2)=1504
PXE1610C found: starting modd
DRY-RUN: skip WriteBlock( Page3F,cmd27,7CB3)
set smb_password=SKIPPED
ICC_MAX=FF00
ICC_MAX is 255A - modification skipped.