DP83848C-POE-EK National Semiconductor, DP83848C-POE-EK Datasheet
DP83848C-POE-EK
Specifications of DP83848C-POE-EK
Related parts for DP83848C-POE-EK
DP83848C-POE-EK Summary of contents
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... PHY through inner lay- ers modified on the second version such that higher output voltage can be produced without damaging the PHY circuit. The factory default output setting for both versions is © 2008 National Semiconductor Corporation National Semiconductor Application Note 1521 Youhao Xi Bradley Kennedy April 4, 2008 3 ...
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System interface will be via the MII connector, and MII header • RJ-45 for network connection • JTAG access via 2x5 header Usage setup and Configuration This section contains information about the setup and con- figuration of the POEPHYTEREV-I/-E ...
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Software No device specific software is required for this board National does provide the integrity utility; a diagnostic and configura- tion package at: www.national.com/appinfo/networks/ethernet_utility.html An Important Note About the Maximum Power Capability and Cable Usage The maximum output power is ...
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www.national.com 4 ...
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5 www.national.com ...
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www.national.com 6 ...
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Connection and Proper Test Methods Figure 4 shows a photo of the evaluation board with the con- nection ports indicated. The PoE circuit occupies the lower part of the board within the rectangular outline. The RJ45 connectors, Ethernet magnetics and ...
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... AUX input voltage level sensed by the VIN pin of the LM5072. A more efficient and generally better performing AUX inrush limiter can be achieved with additional circuitry employing a bipolar transis- tor or MOSFET. Contact National Semiconductor for support. 8 ...
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... AUX source, if the output power level is re- duced. If full power is required under low AUX input voltage, the power transformer will need to be redesigned. Contact National Semiconductor for assistance. PoE Performance Characteristics PoE INPUT POWER UP SEQUENCE The PoE power up sequence is as follows. Note that the RTN pin (IC pin 8) is isolated from the +3 ...
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Horizontal Resolution: 50 ms/div. Trace 1: PoE input voltage across the VIN and VEE pins. 20V/div. Trace 2: Voltage across the RTN and VEE pins, namely the voltage across the Hot Swap MOSFET. 20V/div. Trace 3: The input current. 0.2A/div. ...
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Horizontal Resolution: 1 µs/div. Trace 1: Current sense voltage across RE15. 0.5V/div. Trace 2: The input current from the AUX power source. 100 mA/div FIGURE 8. Cycle-by-cycle Peak Current Limit under 48V PoE Input and Output Dead Short Condition Figure ...
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Horizontal Resolution: 5 µs/div. Trace 1: The AUX input current ripples (AC coupled). 10 mA/div. Trace 2: The FFT of Trace 1 showing the peak value of the harmonics. Hor- izontal 500 kHz/div. Vertical 2.5 mA/div. FIGURE 12. AUX Input ...
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Bill of Materials ITEM PART NUMBER BR1 CBR1-D020S BR2 CBR1-D020S CE1 C2012X7R1E474K CE2 NU CE3 NU CE4 C5750X7R2A475M CE6 C5750X7R2A475M CE6 EEV-HA2A220P CE7 C3216X5R0J226M CE8 C3216X5R0J226M CE9 C3216X5R0J226M CE10 C3216X5R0J226M CE11 C2012X7R1E474K CE12 NU CE13 NU CE14 NU CE15 C3216X5R0J226M ...
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ITEM PART NUMBER TP3 5012K-ND TP4 5012K-ND TP7 5012K-ND TP8 5012K-ND TP12 NU Q1A SI7898DP Q1B NU Q2 BSC022N03SG QE5 SI2301 QE6 SI2301 RE1A CRCW12068R20J RE1B CRCW12068R20J RE1C CRCW12068R20J RE1D CRCW12068R20J RE2A CRCW12068R20J RE2B CRCW12068R20J RE2C CRCW12068R20J RE2D CRCW12068R20J RE3 ...
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ITEM PART NUMBER UE3 LMV431A ZE1 CMZ5944B ZE2 SMAJ58A ZE3 CMPZ4619 ITEM PART NUMBER C10 C11 C12 C13 C14 C15 C16 C17 C18 C20 C21 C22 C23 C49 C50 C53 C54 ...
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ITEM PART NUMBER J10 NU J11 NU J13 CN-PHONE8P8C-RA-SHLD J15 J16 J18 NU R1 CRCW060333R0J R2 CRCW060333R0J R3 CRCW060333R0J R4 CRCW060333R0J R5 CRCW060333R0J R6 CRCW060333R0J R7 CRCW06032201F R8 CRCW06032201F R9 CRCW06032201F R10 CRCW06032201F R11 CRCW06032201F R12 CRCW06032201F R13 CRCW06032201F R14 ...
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ITEM PART NUMBER R51 CRCW12060R0J R52 CRCW12060R0J R53 CRCW12060R0J R54 CRCW12060R0J R55 CRCW12060R0J R56 CRCW12060R0J R57 CRCW12060R0J U1 DP83848-IVV U4 ETH1-230LD U10 NU UE13 0838-1X1T-W6 Y1 FOXSLF/250F-20 Note: NU stands for Not Used, namely not populated. ...
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... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...