DP83848C-POE-EK National Semiconductor, DP83848C-POE-EK Datasheet - Page 79

• 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

8.2.26 RMII Transmit Timing
T2.26.1
T2.26.2
T2.26.3
T2.26.4
Parameter
PMD Output Pair
X1 Clock Period
TXD[1:0], TX_EN, Data Setup
to X1 rising
TXD[1:0], TX_EN, Data Hold
from X1 rising
X1 Clock to PMD Output Pair
Latency
TXD[1:0]
TX_EN
Description
X1
T2.26.1
T2.26.2
50 MHz Reference Clock
From X1 Rising edge to first bit of symbol
Valid Data
79
Notes
T2.26.3
T2.26.4
Symbol
Min
4
2
Typ
20
17
www.national.com
Max Units
bits
ns
ns
ns