POEPHYTEREV-I National Semiconductor, POEPHYTEREV-I Datasheet - Page 59

• Manufacturer Part Number: POEPHYTEREV-I
• Description: BOARD EVAL LM5072, DP83848I
• Manufacturer: National Semiconductor
• Series: PHYTER®r

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

Bit
7
6
5
4
3
2
1
0
HEARTBEAT_DIS
FORCE_LINK_10
JABBER_DIS
RESERVED
RESERVED
RESERVED
POLARITY
Bit Name
LP_DIS
Table 30. 10Base-T Status/Control Register (10BTSCR), address 0x1A
Default
RO/LH
0, RW
0, RW
0, RW
0, RW
1, RW
0, RW
0, RW
Normal Link Pulse Disable:
1 = Transmission of NLPs is disabled.
0 = Transmission of NLPs is enabled.
Force 10Mb Good Link:
1 = Forced Good 10Mb Link.
0 = Normal Link Status.
RESERVED:
Must be zero.
10Mb Polarity Status:
This bit is a duplication of bit 12 in the PHYSTS register. Both bits
will be cleared upon a read of 10BTSCR register, but not upon a
read of the PHYSTS register.
1 = Inverted Polarity detected.
0 = Correct Polarity detected.
RESERVED:
Must be zero.
RESERVED:
Must be set to one.
Heartbeat Disable: This bit only has influence in half-duplex 10Mb
mode.
1 = Heartbeat function disabled.
0 = Heartbeat function enabled.
When the device is operating at 100Mb or configured for full
duplex operation, this bit will be ignored - the heartbeat func-
tion is disabled.
Jabber Disable:
Applicable only in 10BASE-T.
1 = Jabber function disabled.
0 = Jabber function enabled.
59
Description
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