DP83848C-POE-EK National Semiconductor, DP83848C-POE-EK Datasheet - Page 73

• Manufacturer Part Number: DP83848C-POE-EK
• Description: BOARD EVALUATION DP83848C
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of DP83848C-POE-EK

• 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: LM5072
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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
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Max
Units
bits
bits
Units
ns
ns