POEPHYTEREV-I National Semiconductor, POEPHYTEREV-I Datasheet - Page 55

• 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

7.2.6 100 Mb/s PCS Configuration and Status Register (PCSR)
15:13
Bit
12
11
10
9
8
7
6
5
4
3
2
1
0
FORCE_100_OK
SD FORCE PMA
NRZI_BYPASS
Table 26. 100 Mb/s PCS Configuration and Status Register (PCSR), address 0x16
SD_OPTION
DESC_TIME
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
Bit Name
TQ_EN
<00>, RO
Default
0,
0
1, RW
0, RW
0, RW
0, RW
, RW
0
0
0
0
0
0
0
RW
RESERVED: Writes ignored, Read as 0.
RESERVED:
Must be zero.
RESERVED:
Must be zero.
100Mbs True Quiet Mode Enable:
1 = Transmit True Quiet Mode.
0 = Normal Transmit Mode.
Signal Detect Force PMA:
1 = Forces Signal Detection in PMA.
0 = Normal SD operation.
Signal Detect Option:
1 = Enhanced signal detect algorithm.
0 = Reduced signal detect algorithm.
Descrambler Timeout:
Increase the descrambler timeout. When set this should allow the
device to receive larger packets (>9k bytes) without loss of syn-
chronization.
1 = 2ms
0 = 722us (per ANSI X3.263: 1995 (TP-PMD) 7.2.3.3e)
RESERVED:
Must be zero.
Force 100Mb/s Good Link:
1 = Forces 100Mb/s Good Link.
0 = Normal 100Mb/s operation.
RESERVED:
Must be zero.
RESERVED:
Must be zero.
NRZI Bypass Enable:
1 = NRZI Bypass Enabled.
0 = NRZI Bypass Disabled.
RESERVED:
Must be zero.
RESERVED:
Must be zero.
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Description
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