SLUSBX9I March 2014 – July 2019 TPS23861
Command = 40h with 1 Data Byte, R/W
|RESET or POR VALUE||0||0||0||0|
The POEPn bit can be set or cleared by the host processor over the I2C interface. Additionally, the bit is set when in Auto Mode before the port is powered on following the recognition of a valid Class 4 PD. Likewise, the POEPn bit is cleared before the port is powered on when in Auto Mode and a Class 0, 1, 2 or 3 PD is recognized.
One POEPn bit supports each port. When the POEPn bit for a port is set:
Likewise, when the POEPn bit for a port is cleared:
The inrush-foldback behavior is not affected by the setting of the POEPn bit. See Figure 57.
PoEPn: PoE+ bits. Setting this bit causes the 2 x ILIM foldback curve to be applied to Port n.
1 = Use 2 x ILIM foldback curve on Port n.
0 = Use 1 x ILIM foldback curve on Port n.
PoEPn bit should be set according to ICUT value for host to ensure the ICUT and ILIM relationship. See Table 15