Texas Instruments BOOST-PSEMTHR8-097, User Manual

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Initialize
MSP430
Set Power Off to all ports.
Set Ports to SEMI_AUTO mode
Configure Interrupts, Remapping,
OSS,etc.
Start
Every 10 seconds
Print input voltage, temp, and port
telemetry via UART
Disconnection Event
Get Disconnect
Status
Determine port(s)
Classification Event
Get Classification
Status
Determine port(s)
Power On Port/
PPM
Classification Valid?
Print Status
Fault Event
Get Fault Status
Determine port(s)
Print Status
(QDEOH 3RUWV¶ GHWHFWLRQ &
classification
Load SRAM Code
Yes
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EVM Schematic, Layout Guidelines, PCB Assembly and Layer Plots
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TPS23882EVM: PoE, PSE, TPS23882 Evaluation Module
4.4.3 Semi Auto Mode
Operation, the semi auto mode reference code is interrupt based. When MSP430 receives an interrupt
from PSE's INT pin, the code checks interrupt the register and event registers to proceed with actions
accordingly. The flowchart of semi auto mode code is shown in
Figure 12 .
Figure 12. Semi Auto Mode System Software Structure
5 EVM Schematic, Layout Guidelines, PCB Assembly and Layer Plots
This section contains the TPS23882 schematic, layout guidelines, printed-circuit board (PCB) assembly
and layer plots.
5.1 Schematic
Figure 13 through Figure 15 illustrate the TPS23882 (daughter card+motherboard) schematics.