DP83848C-POE-EK National Semiconductor, DP83848C-POE-EK Datasheet - Page 71
DP83848C-POE-EK
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
- Current page: 71 of 84
- Download datasheet (4Mb)
8.2.11 10 Mb/s MII Transmit Timing
Note: An attached Mac should drive the transmit signals using the positive edge of TX_CLK. As shown above, the MII
signals are sampled on the falling edge of TX_CLK.
8.2.12 10 Mb/s MII Receive Timing
Note: RX_CLK may be held low for a longer period of time during transition between reference and recovered clocks.
Minimum high and low times will not be violated.
T2.11.1
T2.11.2
T2.11.3
T2.12.1
T2.12.2
T2.12.3
Parameter
Parameter
RX_CLK
RXD[3:0]
RX_DV
TX_CLK High/Low Time
TXD[3:0], TX_EN Data Setup to TX_CLK fall
TXD[3:0], TX_EN Data Hold from TX_CLK rise
RX_CLK High/Low Time
RX_CLK to RXD[3:0], RX_DV Delay
RX_CLK rising edge delay from RXD[3:0],
RX_DV Valid
TXD[3:0]
TX_CLK
TX_EN
T2.12.2
Description
Description
T2.11.1
T2.11.2
T2.12.1
Valid Data
71
Valid Data
10 Mb/s MII mode
10 Mb/s MII mode
T2.12.3
10 Mb/s MII mode
10 Mb/s MII mode
10 Mb/s MII mode
Notes
Notes
T2.12.1
T2.11.1
T2.11.3
Min
160
100
100
Min
190
25
0
Typ
200
Typ
200
www.national.com
Max
240
Max Units
210
Units
ns
ns
ns
ns
ns
ns
Related parts for DP83848C-POE-EK
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
BOARD EVALUATION DP83848C
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
National Semiconductor [8-Bit D/A Converter]
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
National Semiconductor [Media Coprocessor]
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
AC97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound
Manufacturer:
National Semiconductor
Part Number:
Description:
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
General Purpose, Low Voltage, Low Power, Rail-to-Rail Output Operational Amplifiers
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
8-bit 20 MSPS flash A/D converter.
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Low Noise Quad Operational Amplifier
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Quad Differential Line Receivers
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Quad High Speed Trapezoidal? Bus Transceiver
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Dual Line Receiver
Manufacturer:
National Semiconductor
Datasheet: