Datasheet

MAX5965A/MAX5965B
High-Power, Quad, Monolithic, PSE Controllers
for Power over Ethernet
42 ______________________________________________________________________________________
Table 32a. ICUT Registers 1 and 2
ADDRESS = 2Ah
SYMBOL BIT R/W
DESCRIPTION
Reserved 7 — Reserved
6 R/W ICUT2[2]
5 R/W ICUT2[1]
ICUT2
4 R/W ICUT2[0]
Reserved 3 — Reserved
2 R/W ICUT1[2]
1 R/W ICUT1[1]
ICUT1
0 R/W ICUT1[0]
Table 32b. ICUT Registers 3 and 4
ADDRESS = 2Bh
SYMBOL BIT R/W
DESCRIPTION
Reserved 7 — Reserved
6 R/W ICUT4[2]
5 R/W ICUT4[1]
ICUT4
4 R/W ICUT4[0]
Reserved 3 — Reserved
2 R/W ICUT3[2]
1 R/W ICUT3[1]
ICUT3
0 R/W ICUT3[0]
The three ICUT_ bits (Tables 32a and 32b) allow pro-
gramming of the current-limit and overcurrent thresholds
in excess of the IEEE 802.3af standard limit. The
MAX5965A/MAX5965B can automatically set the ICUT
register or can be manually written to by the software
(see Table 3).
Class 1 and 2 limits can also be programmed by soft-
ware independently from the classification status. See
Table 3. A reset or power-up sets R2Ah = R2Bh = 00h.