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Hello everyone, today we will learn about the circuit characteristics of the Quanta mainboard

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This lesson includes the characteristics and the common signals of the Quanta circuit

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First, let's take a look at the characteristics of the Quanta motherboard

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The small components on the mainboard usually do not have component position numbers

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Its 0 ohm resistors are usually directly connected by copper skin

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And its board number identification usually starts with DA or DA0, before MB, this is its board number

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Look at its common signal interpretation again

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Quanta's public point is usually called VIN

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EC standby power supply is usually called 3VPCU

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The switch signal into EC is usually called NBSWON#

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This is generally connected to the switch pin, the 3.3V

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Then after the EC receives the switch signal

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It will send a "high-low-high" switch signal to the bridge, this signal is called DNBSWON#

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This is the switching signal sent by the EC to the bridge

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SYS_SHDN# is the signal to turn on the standby power supply of the bridge,

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generally it is turned on at a high level and turned off at a low level

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SHDN means closed

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The deep sleep standby voltage of the bridge is usually +3V_S5, or +3V_DEEP_SUS

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It is called differently in different models

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After the bridge receives the switch signal,

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it will send out the SLP_S*# signal when the standby condition is normal

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SLP_S3# and SLP_S4# are usually sent to EC

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The SUSON signal is sent by the EC after receiving the SLP_S4# signal,

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which is used to turn on the memory power supply

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MANON is the voltage required by the EC to open the bridge power supply, bus power supply, etc.

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S0 state after receiving the SLP_S3# signal

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After each power supply is normal, a HWPG signal is usually generated

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This is the HWPG signal generated by the summary of each powered PG

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This signal is a signal that must be checked for maintenance of power failures.

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If the EC fails to receive the HWPG signal, it will power off

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ACIN is the adapter detection signal received by the EC, usually from the ACOK pin of the charging chip

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+VA is the power supply name of the adapter interface

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VRON is the turn-on signal sent to the CPU power supply chip

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Well, this is Quanta's specialty