VRM modify ICC_MAX to run high TDC OEM cpu

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Zhengrankela

Member
Oct 12, 2024
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Okay, let me make another correction. The VRM pin for H3C C35 platform is J266
Among them, 1 scl, 2 gnd, and 3 sda
Because its PMBUS output is hung on the bridge, the multimeter cannot detect it.
 

RolloZ170

Well-Known Member
Apr 24, 2016
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Okay, let me make another correction. The VRM pin for H3C C35 platform is J266
Among them, 1 scl, 2 gnd, and 3 sda
Because its PMBUS output is hung on the bridge, the multimeter cannot detect it.
same J266 and pinout on HP DL360/DL380 Gen10, sure ?
 

WANGXIANG

New Member
Feb 27, 2025
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I also ran the command MCP2221a_iccmax_FF.exe -scan 20 70, but no devices were detected within the specified I²C address range.
 

pvd276

New Member
Apr 15, 2025
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i scan mainboard foxconn RM760-FX , not show icc_max, only show


scanning at addr: 60
probably TPS53679 found at addr: 60
scanning at addr: 61
probably TPS53679 found at addr: 61
scanning at addr: 62
scanning at addr: 63
 

ericzqu

New Member
Apr 24, 2025
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Just got a Cisco C240 M5, and I found the vrm chip (PXE1610CDN) which is close to a 4 pin header. I cannot read found the trace of the board on what’s leading to the pin. Is there a way to identify them without using fancy equipment? Any help is much appreciated!
 

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RolloZ170

Well-Known Member
Apr 24, 2016
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Just got a Cisco C240 M5, and I found the vrm chip (PXE1610CDN) which is close to a 4 pin header.
header must not have connection even if close to the VRM controller.
Is there a way to identify them without using fancy equipment?
look at the circuit diagram from manufacturer, if you don't have it no.
what helps is: multimeter, magnifying glass or head magnifier.
note: there can be a 20-33ohm series resistor in SDA/SCL signal.
edit:
check if GND is connected to Ground (e.g. any shield)
IMG_5272sth.jpg
1610 pinoutsth.jpg
 
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