Texas Instruments TIDA-050026-23882, Design Manual

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Hardware, Software, Testing Requirement and Test Result
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10 TIDA032 – October 2019
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24-Port (2 pair) Power Sourcing Equipment Reference Design for Multi-port
Applications
3.2.1.2 LED, Test Point, Jumper and Connector Settings
3.2.1.2.1 EVM LEDs
Table 4 lists the EVM LEDs and their descriptions.
Table 4. EVM LEDs
LED COLOR DESCRIPTION
PSEMTHR24EVM-081
J15, J55 Green, Yellow There is one green and yellow LED on each RJ45 port
PSEMCUDAUEVM-082
D1 Green The total power consumption is within the pre-configured guardband
3.2.1.2.2 EVM Test Points
Table 5 lists the EVM test points.
Table 5. EVM Test Points
TP LABEL DESCRIPTION
PSEMTHR24EVM-081
TP1 55VDC VPWR
TP2 GND VPWR ground
TP3 OC-ALERT System over current alert signal
TP4 SDA I
2
C data
TP5 SCL I
2
C clock
TP6 PG1 Power good signal for power supply #1
TP7 PG2 Power good signal for power supply #2
TP8 PSE_3.3V 3.3 V for PSE devices
TP9 GND PSE_3.3V ground
TP10 3.3V_ISO Isolated 3.3V for MSP430
TP11 3.3V 3.3 V for debug
TPS12 , TP13 GND_ISO 3.3V_ISO ground
TP14 OSS OSS signal from MCU to PSE
TPS23882EM-084
TP1 PSE_3.3 3.3 V for PSE devices
TP2 VPWR VPWR for PSE devices
TP3, TP4, TP14, TP19 GND VPWR and PSE_3.3V ground
TP5 3.3V_ISO Isolated 3.3 V
TP6 RESET Reset signal from MCU
TP7 OSS OSS signal from MCU
TP8 INT INT signal to MCU
TP9 SDA I
2
C data from/to MCU
TP10 SCL I
2
C clock from MCU
TP11 PSE_RST Reset signal to PSE
TP12 PSE_OSS OSS signal to PSE
TP13 PSE_INT INT signal from PSE
TP15 GND_ISO 3.3V_ISO ground
TP16 PSE_SCL I
2
C clock signal to PSE
TP17 PSE_SDAI I
2
C data to PSE
TP18 PSE_SDAO I
2
C data from PSE