MAX5965AEAX+T Maxim Integrated Products, MAX5965AEAX+T Datasheet - Page 31

• Manufacturer Part Number: MAX5965AEAX+T
• Description: IC PSE CTRLR FOR POE 36SSOP
• Manufacturer: Maxim Integrated Products
• Type: Power Over Ethernet Controller (PoE)r

Specifications of MAX5965AEAX+T

• Applications: IP Phones, Power over LAN, Network Routers and Switches
• Internal Switch(s): No
• Voltage - Supply: 2.4 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-BSOP (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The port status register (Table 13a) records the results of
the detection and classification at the end of each phase in
three encoding bits each. R0Ch contains the detection
and classification status of port 1. R0Dh corresponds to
port 2, R0Eh corresponds to port 3, and R0Fh corresponds
to port 4. Tables 13b and 13c show the detection/classifi-
cation result decoding charts, respectively. For CLC_EN =
0, the detection result is shown in Table 13b. When
CLC_EN is set high, the MAX5965A/MAX5965B allow valid
detection of high capacitive load of up to 150µF.
Table 13a. Port Status Registers
Table 13b. Detection Result Decoding Chart
Table 13c. Classification Result Decoding
Chart
Reserved
CLASS_
Reserved
DET_ST_
(ADDRESS = 0Ch, 0Dh, 0Eh, 0Fh)
(ADDRESS = 0Ch, 0Dh, 0Eh, 0Fh)
High-Power, Quad, Monolithic, PSE Controllers
SYMBOL
ADDRESS = 0Ch, 0Dh, 0Eh, 0Fh
CLASS_[2:0]
DET_ST_[2:0]
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
______________________________________________________________________________________
BIT
7
6
5
4
3
2
1
0
R/W
Current limit (> I
R
R
R
R
R
R
R
R
CLASS RESULT
None
DCP
HIGH CAP
RLOW
DET_OK
RHIGH
OPEN0
DCN
Unknown
DETECTED
Reserved
CLASS_[2]
CLASS_[1]
CLASS_[0]
Reserved
DET_ST_[2]
DET_ST_[1]
DET_ST_[0]
1
2
3
4
5
0
CILIM
)
Detection status unknown
Positive DC supply connected at the port (AGND - V
High capacitance at the port (> 8.5µF)
Low resistance at the port, R
Detection pass, 15kΩ < R
High resistance at the port, R
Open port (I < 10µA)
Negative DC supply connected to the port (V
for Power over Ethernet
When 2-event classification is not enabled (ENx_CL6 =
0), the classification status is reported in Table 13c.
When 2-event classification is enabled (ENx_CL6 = 1),
the CLASS_[2:0] bits are set to 000 and the classifica-
tion result is reported in locations R2Ch–R2Fh.
As a protection, when POFF_CL (R17h[3], Table 21) is
set to 1, the MAX5965A/MAX5965B prohibit turning on
power to the port that returns a status 111 after classifi-
cation. A reset sets 0Ch, 0Dh, 0Eh, and 0Fh = 00h.
DESCRIPTION
PD
DESCRIPTION
PD
< 33kΩ
PD
< 15kΩ
> 33kΩ
OUT_
- V
OUT_
EE
< 2V)
< 1V)
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