POEPHYTEREV-I National Semiconductor, POEPHYTEREV-I Datasheet - Page 73
POEPHYTEREV-I
Manufacturer Part Number
POEPHYTEREV-I
Description
BOARD EVAL LM5072, DP83848I
Manufacturer
National Semiconductor
Series
PHYTER®r
Datasheets
1.DP83848IVVNOPB.pdf
(84 pages)
2.LM5072MHX-50NOPB.pdf
(26 pages)
3.DP83848C-MAU-EK.pdf
(18 pages)
Specifications of POEPHYTEREV-I
Main Purpose
Special Purpose DC/DC, Power Over Ethernet
Outputs And Type
1, Isolated
Power - Output
24W
Voltage - Output
3.3V
Current - Output
7.3A
Voltage - Input
39 ~ 57V
Regulator Topology
Flyback
Frequency - Switching
250kHz
Board Type
Fully Populated
Utilized Ic / Part
DP83848, LM5072
Lead Free Status / RoHS Status
Not applicable / Not applicable
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8.2.15 10BASE-T Transmit Timing (Start of Packet)
Note: 1 bit time = 100 ns in 10Mb/s.
8.2.16 10BASE-T Transmit Timing (End of Packet)
T2.16.1
T2.16.2
Parameter
T2.15.1
T2.15.2
PMD Output Pair
Parameter
PMD Output Pair
TX_CLK
PMD Output Pair
TX_EN
End of Packet High Time
(with ‘0’ ending bit)
End of Packet High Time
(with ‘1’ ending bit)
TXD
Transmit Output Delay from the
Falling Edge of TX_CLK
Transmit Output Delay from the
Rising Edge of TX_CLK
TX_CLK
TX_EN
Description
Description
1
0
10 Mb/s MII mode
10 Mb/s Serial mode
1
0
T2.15.1
73
Notes
Notes
T2.15.2
T2.16.2
Min
T2.16.1
Min
250
250
Typ
3.5
3.5
Typ
300
300
Max
www.national.com
Max
Units
bits
bits
Units
ns
ns
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