High-Power, Quad, PSE Controller
for Power-Over-Ethernet
______________________________________________________________________________________   43
ADDR
REGISTER NAME
R/W    PORT
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
RESET
STATE
MAXIM RESERVED
20H
Reserved
G
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
21H
Reserved
G
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
22H
Reserved
G
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
23H
Program 1
R/W
4321
Reserved
Reserved
CLC_EN
DET_BY
OSCF_RS
AC_TH[2]
AC_TH[1]
AC_TH[0]
0000,0000
24h
High Power Mode
R/W
G
Reserved
Reserved
Reserved
Reserved
Reserved
0000,0000
25h
Reserved
G
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0000,0000
26h
Reserved
G
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0000,0000
27H
Reserved
G
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
28H
Reserved
G
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
29H
Misc Config 2
R/W
1234
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
IVEE[1]
IVEE[0]
0000,0000
2AH
ICUT Register 1
R/W
21
Reserved
ICUT2[2]
ICUT2[1]
ICUT2[0]
Reserved
ICUT1[2]
ICUT1[1]
ICUT1[0]
0000,0000
2BH
ICUT Register 2
R/W
43
Reserved
ICUT4[2]
ICUT4[1]
ICUT4[0]
Reserved
ICUT3[2]
ICUT3[1]
ICUT[30]
0000,0000
CLASSIFICATION REGISTERS
2CH
Port 1 Class
RO
1
Reserved
Reserved
0000,0000
2DH
Port 2 Class
RO
2
Reserved
Reserved
0000,0000
2EH
Port 3 Class
RO
3
Reserved
Reserved
0000,0000
2FH
Port 4 Class
RO
4
Reserved
Reserved
0000,0000
CURRENT REGISTER
30H
Current Port 1 (MSB)
RO
1
IPD1[8]
IPD1[7]
IPD1[6]
IPD1[5]
IPD1[4]
IPD1[3]
IPD1[2]
IPD1[1]
0000,0000
31H
Current Port 1 (LSB)
RO
1
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
IPD1[0]
0000,0000
32H
Current Port 2 (MSB)
RO
2
IPD2[8]
IPD2[7]
IPD2[6]
IPD2[5]
IPD2[4]
IPD2[3]
IPD2[2]
IPD2[1]
0000,0000
33H
Current Port 2 (LSB)
RO
2
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
IPD2[0]
0000,0000
34H
Current Port 3 (MSB)
RO
3
IPD3[8]
IPD3[7]
IPD3[6]
IPD3[5]
IPD3[4]
IPD3[3]
IPD3[2]
IPD3[1]
0000,0000
35H
Current Port 3 (LSB)
RO
3
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
IPD3[0]
0000,0000
36H
Current Port 4 (MSB)
RO
4
IPD4[8]
IPD4[7]
IPD4[6]
IPD4[5]
IPD4[4]
IPD4[3]
IPD4[2]
IPD4[1]
0000,0000
37H
Current Port 4 (LSB)
RO
4
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
IPD4[0]
0000,0000
Table 37. Register Summary (continued)
*UV and UVLO bits of V
EE
and V
DD
asserted depends on the order V
EE
and V
DD
supplies are brought up.
A = AUTO pin state before reset.
M = MIDSPAN state before reset.
A3...0 = ADDRESS input states before reset.