VRM modify ICC_MAX to run high TDC/TDP OEM processors

RolloZ170 · Apr 29, 2024

awaitnil said:
Module model: PXE1610CDN G003
Address Introduction: https://www.infineon.com/cms/en/pro...gital-multiphase-controllers/pxe1610cdn-g003/

Do I need to purchase another multimeter?

the MPS dongle is onyl for MPS MP2955A,
you remember i recommended (Adafruit) MCP2221a device ? you need this to programm PXE1610C
multimeter is an instrument with the "peep" on short curcuit....

awaitnil · Apr 29, 2024

RolloZ170 said:
the MPS dongle is onyl for MPS MP2955A,
you remember i recommended (Adafruit) MCP2221a device ? you need this to programm PXE1610C
multimeter is an instrument with the "peep" on short curcuit....

I have bought everything you mentioned (CH341A, Adafruit MCP2221A, EVKT-USBI2C-02 USB MPS I2C PMBus MPS), including a multimeter. I just placed an order to purchase it and it will arrive at home tomorrow.
Just in case, buy everything!
Tomorrow, I will test pin1, pin2, and pin3 as you said

fieldofdisarray · Apr 29, 2024

I can confirm I got this mod working on three separate HPE ProLiant DL380 Gen10 servers with Intel Xeon Platinum 8272CLs using an Adafruit MCP2221A. I didn't need to solder anything either, bending the pins on my cables going into the Motherboard for some light friction worked, but not sure if I would fully recommend doing that unless you're OK with the potential risks.

Thanks @RolloZ170 !

awaitnil · Apr 29, 2024

fieldofdisarray said:
I can confirm I got this mod working on three separate HPE ProLiant DL380 Gen10 servers with Intel Xeon Platinum 8272CLs using an Adafruit MCP2221A. I didn't need to solder anything either, bending the pins on my cables going into the Motherboard for some light friction worked, but not sure if I would fully recommend doing that unless you're OK with the potential risks.

View attachment 36403

Thanks @RolloZ170 !

Great, I also want an HP DL380/388 GEN10, but it's really too expensive.

RolloZ170 · Apr 30, 2024

awaitnil said:
Great, I also want an HP DL380/388 GEN10, but it's really too expensive.

have a spare HP DL380 G10 system board, you need a chassis only.

awaitnil · Apr 30, 2024

RolloZ170 said:
have a spare HP DL380 G10 system board, you need a chassis only.

Sorry, I think I really want it, but I am Taiwanese. I think we are far away.
This is a very troublesome matter for both you to mail and me to receive.

awaitnil · Apr 30, 2024

@RolloZ170

I have found the GND interface. Next, I need to try connecting Adafruit MCP2221A to it and then use your software to obtain detailed information.
Excuse me, do I need to power on this motherboard?

awaitnil · Apr 30, 2024

@RolloZ170

Hello sir, is my connection correct?

I have referred to this gentleman's wiring method and I am not sure if it is correct. Please give me some guidance!!

https://forums.servethehome.com/index.php?threads/vrm-modify-icc_max-to-run-high-tdc-tdp-oem-processors.38686/post-385536

RolloZ170 · Apr 30, 2024

awaitnil said:
Hello sir, is my connection correct?

no.
yellow = SCL= pin2 I2C0_PWR (if not work pin1)
blue = SDA = pin1 I2C0_PWR (if not work pin2)
black = GND = pin3 I2C0_PWR

awaitnil said:
Excuse me, do I need to power on this motherboard?

first try with standby power only (AC plugged, BMC blinking but Host Off,)

awaitnil · Apr 30, 2024

RolloZ170 said:
no.
yellow = SCL= pin2 I2C0_PWR (if not work pin1)
blue = SDA = pin1 I2C0_PWR (if not work pin2)
black = GND = pin3 I2C0_PWR

first try with standby power only (AC plugged, BMC blinking but Host Off,)

"Okay, I will strictly follow what you said for the next steps.

So, does it mean that once the motherboard is powered on, I can proceed with I2C debugging without entering the 'BIOS' or booting up the host? Is that correct?"

RolloZ170 · Apr 30, 2024

awaitnil said:
So, does it mean that once the motherboard is powered on, I can proceed with I2C debugging without entering the 'BIOS' or booting up the host? Is that correct?"

try that first, worked on most systems with PCE1610C that way.
as i sayd, i never had InSpur motherboards, so i can't know.

awaitnil · Apr 30, 2024

RolloZ170 said:
try that first, worked on most systems with PCE1610C that way.
as i sayd, i never had InSpur motherboards, so i can't know.

Sorry, sir. I will receive an error message when running "MCP2221a_iccmax-FF.exe" console

The MCP2221a device is connected
Unhandled exception: System IndexOutOfRangeException: Index exceeds array bounds.
At MCP2221a_VRM_mod Program Main (String [] args)

RolloZ170 · Apr 30, 2024

awaitnil said:
Sorry, sir. I will receive an error message when running "MCP2221a_iccmax-FF.exe" console

read readme
"MCP2221a_iccmax-FF.exe -scan 10 70"

awaitnil · Apr 30, 2024

RolloZ170 said:
read readme
"MCP2221a_iccmax-FF.exe -scan 10 70"

I'm not sure which one it is after scanning so many addresses.

The MCP2221a device is connected.

scanning at addr: 10
scanning at addr: 11
scanning at addr: 12
scanning at addr: 13
scanning at addr: 14
scanning at addr: 15
scanning at addr: 16
scanning at addr: 17
scanning at addr: 18
scanning at addr: 19
scanning at addr: 1A
scanning at addr: 1B
scanning at addr: 1C
scanning at addr: 1D
scanning at addr: 1E
scanning at addr: 1F
scanning at addr: 20
scanning at addr: 21
scanning at addr: 22
scanning at addr: 23
scanning at addr: 24
scanning at addr: 25
scanning at addr: 26
scanning at addr: 27
scanning at addr: 28
scanning at addr: 29
scanning at addr: 2A
scanning at addr: 2B
scanning at addr: 2C
scanning at addr: 2D
scanning at addr: 2E
scanning at addr: 2F
scanning at addr: 30
scanning at addr: 31
scanning at addr: 32
scanning at addr: 33
scanning at addr: 34
scanning at addr: 35
scanning at addr: 36
scanning at addr: 37
scanning at addr: 38
scanning at addr: 39
scanning at addr: 3A
scanning at addr: 3B
scanning at addr: 3C
scanning at addr: 3D
scanning at addr: 3E
scanning at addr: 3F
scanning at addr: 40
scanning at addr: 41
scanning at addr: 42
scanning at addr: 43
scanning at addr: 44
scanning at addr: 45
scanning at addr: 46
scanning at addr: 47
scanning at addr: 48
scanning at addr: 49
scanning at addr: 4A
scanning at addr: 4B
scanning at addr: 4C
scanning at addr: 4D
scanning at addr: 4E
scanning at addr: 4F
scanning at addr: 50
scanning at addr: 51
scanning at addr: 52
scanning at addr: 53
scanning at addr: 54
scanning at addr: 55
scanning at addr: 56
scanning at addr: 57
scanning at addr: 58
scanning at addr: 59
scanning at addr: 5A
scanning at addr: 5B
scanning at addr: 5C
scanning at addr: 5D
scanning at addr: 5E
scanning at addr: 5F
scanning at addr: 60
scanning at addr: 61
scanning at addr: 62
scanning at addr: 63
scanning at addr: 64
scanning at addr: 65
scanning at addr: 66
scanning at addr: 67
scanning at addr: 68
scanning at addr: 69
scanning at addr: 6A
scanning at addr: 6B
scanning at addr: 6C
scanning at addr: 6D
scanning at addr: 6E
scanning at addr: 6F
scanning at addr: 70
press any key.

RolloZ170 · Apr 30, 2024

awaitnil said:
The MCP2221a device is connected.

try powering on the board (left into BIOS) and scan again.
if not work, flip SCL <> SDA

awaitnil · Apr 30, 2024

RolloZ170 said:
try powering on the board (left into BIOS) and scan again.
if not work, flip SCL <> SDA

I have scanned some relevant information using MCP2221 IC2/SMBUS Terminals. Could you please help me check it!

Code:

> Bus scan started. 7 bit address used. Start address = 0x10, End address = 0x70
Slave found. 8 bit address = 0x20; 7 bit address = 0x10 Write
Slave found. 8 bit address = 0x2F; 7 bit address = 0x17 Read
Slave found. 8 bit address = 0x30; 7 bit address = 0x18 Write
Slave found. 8 bit address = 0x31; 7 bit address = 0x18 Read
Slave found. 8 bit address = 0x32; 7 bit address = 0x19 Write
Slave found. 8 bit address = 0x33; 7 bit address = 0x19 Read
Slave found. 8 bit address = 0x5C; 7 bit address = 0x2E Write
Slave found. 8 bit address = 0x5D; 7 bit address = 0x2E Read
Slave found. 8 bit address = 0x5E; 7 bit address = 0x2F Write
Slave found. 8 bit address = 0x5F; 7 bit address = 0x2F Read
Slave found. 8 bit address = 0x60; 7 bit address = 0x30 Write
Slave found. 8 bit address = 0x61; 7 bit address = 0x30 Read
Slave found. 8 bit address = 0x8A; 7 bit address = 0x45 Write
Slave found. 8 bit address = 0x8B; 7 bit address = 0x45 Read
Slave found. 8 bit address = 0x8C; 7 bit address = 0x46 Write
Slave found. 8 bit address = 0x8D; 7 bit address = 0x46 Read
Slave found. 8 bit address = 0x8E; 7 bit address = 0x47 Write
Slave found. 8 bit address = 0xB5; 7 bit address = 0x5A Read
Slave found. 8 bit address = 0xB6; 7 bit address = 0x5B Write
Slave found. 8 bit address = 0xB7; 7 bit address = 0x5B Read
Slave found. 8 bit address = 0xB8; 7 bit address = 0x5C Write
Slave found. 8 bit address = 0xB9; 7 bit address = 0x5C Read
Slave found. 8 bit address = 0xBA; 7 bit address = 0x5D Write
Bus scan finished

RolloZ170 · Apr 30, 2024

awaitnil said:
I have scanned some relevant information using MCP2221 IC2/SMBUS Terminals. Could you please help me check it!

SCL and SDA seem correct connected.
scan with my app - it tells you the address of controller if one is found !
if no PXE1610C is found try I2C1_PWR 3pin header.

awaitnil · Apr 30, 2024

RolloZ170 said:
SCL and SDA seem correct connected.
scan with my app - it tells you the address of controller if one is found !
if no PXE1610C is found try I2C1_PWR 3pin header.

The Adafruit MCP2221A indicator light is red, may I ask if there are any issues.

If there are no issues, I will follow your instructions to switch from I2C0-PWR to I2C1PWR

awaitnil · Apr 30, 2024

RolloZ170 said:
SCL and SDA seem correct connected.
scan with my app - it tells you the address of controller if one is found !
if no PXE1610C is found try I2C1_PWR 3pin header.

This is the scanning result of I2C1PWR.
Hello sir, I did not power on the motherboard host. May I ask if I need to enter the BIOS and scan it later.

Code:

G:\i2chelp\MCP2221a_VRM_mod(16042024)>MCP2221a_iccmax_FF.exe -scan 10 7f
The MCP2221a device is connected.

scanning at addr: 10
scanning at addr: 11
scanning at addr: 12
scanning at addr: 13
scanning at addr: 14
scanning at addr: 15
scanning at addr: 16
scanning at addr: 17
scanning at addr: 18
scanning at addr: 19
scanning at addr: 1A
scanning at addr: 1B
scanning at addr: 1C
scanning at addr: 1D
scanning at addr: 1E
scanning at addr: 1F
scanning at addr: 20
scanning at addr: 21
scanning at addr: 22
scanning at addr: 23
scanning at addr: 24
scanning at addr: 25
scanning at addr: 26
scanning at addr: 27
scanning at addr: 28
scanning at addr: 29
scanning at addr: 2A
scanning at addr: 2B
scanning at addr: 2C
scanning at addr: 2D
scanning at addr: 2E
scanning at addr: 2F
scanning at addr: 30
scanning at addr: 31
scanning at addr: 32
scanning at addr: 33
scanning at addr: 34
scanning at addr: 35
scanning at addr: 36
scanning at addr: 37
scanning at addr: 38
scanning at addr: 39
scanning at addr: 3A
scanning at addr: 3B
scanning at addr: 3C
scanning at addr: 3D
scanning at addr: 3E
scanning at addr: 3F
scanning at addr: 40
scanning at addr: 41
scanning at addr: 42
scanning at addr: 43
scanning at addr: 44
scanning at addr: 45
scanning at addr: 46
scanning at addr: 47
scanning at addr: 48
scanning at addr: 49
scanning at addr: 4A
scanning at addr: 4B
scanning at addr: 4C
scanning at addr: 4D
scanning at addr: 4E
scanning at addr: 4F
scanning at addr: 50
scanning at addr: 51
scanning at addr: 52
scanning at addr: 53
scanning at addr: 54
scanning at addr: 55
scanning at addr: 56
scanning at addr: 57
scanning at addr: 58
scanning at addr: 59
scanning at addr: 5A
scanning at addr: 5B
scanning at addr: 5C
scanning at addr: 5D
scanning at addr: 5E
scanning at addr: 5F
scanning at addr: 60
scanning at addr: 61
scanning at addr: 62
scanning at addr: 63
scanning at addr: 64
scanning at addr: 65
scanning at addr: 66
scanning at addr: 67
scanning at addr: 68
scanning at addr: 69
scanning at addr: 6A
scanning at addr: 6B
scanning at addr: 6C
scanning at addr: 6D
scanning at addr: 6E
scanning at addr: 6F
scanning at addr: 70
scanning at addr: 71
scanning at addr: 72
scanning at addr: 73
scanning at addr: 74
scanning at addr: 75
scanning at addr: 76
scanning at addr: 77
scanning at addr: 78
scanning at addr: 79
scanning at addr: 7A
scanning at addr: 7B
scanning at addr: 7C
scanning at addr: 7D
scanning at addr: 7E
scanning at addr: 7F
press any key.


> Bus scan started. 7 bit address used. Start address = 0x10, End address = 0x7F
Slave found. 8 bit address = 0x30; 7 bit address = 0x18 Write
Slave found. 8 bit address = 0x31; 7 bit address = 0x18 Read
Slave found. 8 bit address = 0x32; 7 bit address = 0x19 Write
Slave found. 8 bit address = 0x33; 7 bit address = 0x19 Read
Slave found. 8 bit address = 0x34; 7 bit address = 0x1A Write
Slave found. 8 bit address = 0x5C; 7 bit address = 0x2E Write
Slave found. 8 bit address = 0x5D; 7 bit address = 0x2E Read
Slave found. 8 bit address = 0x5E; 7 bit address = 0x2F Write
Slave found. 8 bit address = 0x5F; 7 bit address = 0x2F Read
Slave found. 8 bit address = 0x8D; 7 bit address = 0x46 Read
Slave found. 8 bit address = 0x8E; 7 bit address = 0x47 Write
Slave found. 8 bit address = 0x8F; 7 bit address = 0x47 Read
Slave found. 8 bit address = 0x90; 7 bit address = 0x48 Write
Slave found. 8 bit address = 0x91; 7 bit address = 0x48 Read
Slave found. 8 bit address = 0x92; 7 bit address = 0x49 Write
Slave found. 8 bit address = 0xCD; 7 bit address = 0x66 Read
Slave found. 8 bit address = 0xCE; 7 bit address = 0x67 Write
Slave found. 8 bit address = 0xCF; 7 bit address = 0x67 Read
Slave found. 8 bit address = 0xD0; 7 bit address = 0x68 Write
Slave found. 8 bit address = 0xD1; 7 bit address = 0x68 Read
Slave found. 8 bit address = 0xD2; 7 bit address = 0x69 Write
Slave found. 8 bit address = 0xFB; 7 bit address = 0x7D Read
Slave found. 8 bit address = 0xFC; 7 bit address = 0x7E Write
Bus scan finished

RolloZ170 · Apr 30, 2024

awaitnil said:
The Adafruit MCP2221A indicator light is red, may I ask if there are any issues.

maybe they don't have green LED in stock. there is no mention of LED color in the manual.

awaitnil said:
If there are no issues, I will follow your instructions to switch from I2C0-PWR to I2C1PWR

it could be that we don't have the right connectors.

VRM modify ICC_MAX to run high TDC/TDP OEM processors

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