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MP3924 Datasheet(PDF) 46 Page - Monolithic Power Systems

Part # MP3924
Description  Quad-Port, IEEE 802.3af/at PSE Controller for Power over Ethernet
PDF  56 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP3924 Datasheet(HTML) 46 Page - Monolithic Power Systems

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MP3924
– QUAD-PORT IEEE 802.3AF/AT PSE CONTROLLER
MP3924 Rev. 1.0
MonolithicPower.com
46
7/16/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
D[3:0]
LEGDET1
0000
Returns the legacy detection results for port 1.
0000: No legacy detection
0001: Valid (5µF < PD input capacitor < 100µF)
0010: Unable to discharge the PD input capacitance to 2.4V
0100: The first measurement exceeds the 18.5V maximum voltage
0101: The second measurement exceeds the 18.5V maximum voltage
0110: The difference between the measured voltages is below 0.5V
LEGACY_DETECT_RESULT2 (36h)
Read-only
Bits
Bit Name
Default Value
Description
D[7:4]
LEGDET4
0000
Returns the legacy detection results for port 4.
0000: No legacy detection
0001: Valid (5µF < PD input capacitor < 100µF)
0010: Unable to discharge the PD input capacitance to 2.4V
0100: The first measurement exceeds the 18.5V maximum voltage
0101: The second measurement exceeds the 18.5V maximum voltage
0110: The difference between the measured voltages is below 0.5V
D[3:0]
LEGDET3
0000
Returns the legacy detection results for port 3.
0000: No legacy detection
0001: Valid (5µF < PD input capacitor < 100µF)
0010: Unable to discharge the PD input capacitance to 2.4V
0100: The first measurement exceeds the 18.5V maximum voltage
0101: The second measurement exceeds the 18.5V maximum voltage
0110: The difference between the measured voltages is below 0.5V



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