POWER SOURCE DEVICE CHIP, POWER SOURCE DEVICE, AND POE(POWER OVER ETHERNET) SYSTEM AND METHOD

摘要

PROBLEM TO BE SOLVED: To provide a power source device chip, a power source device, and a PoE(Power over Ethernet) system and method.SOLUTION: A PSE(Power Sourcing Equipment) chip includes a first register, and the PSE chip controls the power supply channels of a PSE chip in accordance with a value stored in the first register. The PSE chip changes a value stored in the first register to a calculation value in response to a second instruction. The second instruction has: a second slave address; a first command byte; and a second data byte. The second slave address is the virtual address of a virtual power reception group, and the calculation value is a result obtained by calculation following the second data byte of the second instruction and the channel instruction value of the virtual power reception group stored in the PSE chip. Information indicating whether or not the power reception channels have been added to the virtual power reception group is stored in the PSE chip such that the power supply channels added to the virtual power reception group are simultaneously controllable.