MAX5952 MAXIM [Maxim Integrated Products], MAX5952 Datasheet - Page 32

• Manufacturer Part Number: MAX5952
• Description: High-Power, Quad, PSE Controller for Power-Over-Ethernet
• Manufacturer: MAXIM [Maxim Integrated Products]

Setting DCD_EN_ to 1 enables the DC load disconnect
detection feature (Table 17). Setting ACD_EN_ to 1
enables the AC load disconnect feature. If enabled, the
load disconnect detection starts during power mode
High-Power, Quad, PSE Controller
for Power-Over-Ethernet
The MAX5952 uses two bits for each port to set the mode
of operation. Set the modes according to Table 16.
A reset sets R12h = AAAAAAAA where A represents
the latched-in state of the AUTO input prior to the reset.
Table 16. Mode Register
Table 16a. Mode Status
Table 17. Load Disconnect Detection Enable Register
32
P4_M1
P4_M0
P3_M1
P3_M0
P2_M1
P2_M0
P1_M1
P1_M0
ACD_EN4
ACD_EN3
ACD_EN2
ACD_EN1
DCD_EN4
DCD_EN3
DCD_EN2
DCD_EN1
______________________________________________________________________________________
MODE
SYMBOL
SYMBOL
00
01
10
11
ADDRESS = 12h
ADDRESS = 13h
Shutdown
Manual
Semi-auto
Auto
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
DESCRIPTION
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
MODE[1] for port 4
MODE[0] for port 4
MODE[1] for port 3
MODE[0] for port 3
MODE[1] for port 2
MODE[0] for port 2
MODE[1] for port 1
MODE[0] for port 1
Enable AC disconnect detection on port 4
Enable AC disconnect detection on port 3
Enable AC disconnect detection on port 2
Enable AC disconnect detection on port 1
Enable DC disconnect detection on port 4
Enable DC disconnect detection on port 3
Enable DC disconnect detection on port 2
Enable DC disconnect detection on port 1
and after startup when the corresponding PGOOD_ bit
in register R10h (Table 14) goes high. A reset sets
R13h = 0000AAAA where A represents the latched-in
state of the AUTO input prior to the reset.
Use software to change the mode of operation.
Software resets of ports (RESET_P_ bit, Table 23) do
not affect the mode register.
DESCRIPTION
DESCRIPTION