PCH chip doesn't work and keep reboot on SLP_S3#

[jackey_Yao]

One of our motherboards uses a QM67 PCH chip, which is repeatedly powered on and off. Measure signal SLP_S3#, output shows a square wave, high level is 3.3V and hold for 470 ms, then go low level for 5 seconds, and then, back to 3.3V. The process is in a cycle and repeat again and again. As a result, all the working voltages on the motherboard are raised and pulled down by SLP_S3#. BTW, no clock output can be observed on QM67, PLT_RESET# is keeping low in the process.

[n_scott_pearson]

The QM67 chipset (PCH) is almost 13 years old and has long been discontinued. There's not much that we can do for you here.

Sorry,

...S

[Diego_INTEL]

Hello @jackey_Yao,

Thank you for contacting Intel Embedded Community.

As n_scott_pearson mentioned, being a discontinued device, we don't even have the proper documentation available, so, we can't do much with this.

Best regards,

@Diego_INTEL