DP83848C-POE-EK National Semiconductor, DP83848C-POE-EK Datasheet - Page 58

• 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

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7.2.10 10Base-T Status/Control Register (10BTSCR)
14:12
11:9
Bit
4:0
Bit
15
6
5
8
LOOPBACK_10_D
PHYADDR[4:0]
LED_CNFG[1]
LED_CNFG[0]
10BT_SERIAL
RESERVED
SQUELCH
Bit Name
Bit Name
IS
Table 30. 10Base-T Status/Control Register (10BTSCR), address 0x1A
Table 29. PHY Control Register (PHYCR), address 0x19 (Continued)
Strap, RW
Strap, RW
Strap, RW
100, RW
Default
Default
0, RW
0, RW
0, RW
10Base-T Serial Mode (SNI)
1 = Enables 10Base-T Serial Mode
0 = Normal Operation
Places 10 Mb/s transmit and receive functions in Serial Network
Interface (SNI) Mode of operation. Has no effect on 100 Mb/s
operation.
RESERVED:
Must be zero.
Squelch Configuration:
Used to set the Squelch ‘ON’ threshold for the receiver.
Default Squelch ON is 330mV peak.
data to the Receive data in addition to transmitting the data on the
physical medium. This is for consistency with earlier 10BASE2 and
10BASE5 implementations which used a shared medium. Setting
this bit disables the loopback function.
This bit does not affect loopback due to setting BMCR[14].
LEDs Configuration
In Mode 1, LEDs are configured as follows:
LED_LINK = ON for Good Link, OFF for No Link
LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s
LED_ACT/COL = ON for Activity, OFF for No Activity
In Mode 2, LEDs are configured as follows:
LED_LINK = ON for good Link, BLINK for Activity
LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s
LED_ACT/COL = ON for Collision, OFF for No Collision
Full Duplex, OFF for Half Duplex
In Mode 3, LEDs are configured as follows:
LED_LINK = ON for Good Link, BLINK for Activity
LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s
LED_ACT/COL = ON for Full Duplex, OFF for Half Duplex
PHY Address: PHY address for port.
In half-duplex mode, default 10BASE-T operation loops Transmit
LED_CNFG[1]
58
Don’t care
1
0
LED_ CNFG[0]
Description
Description
1
0
0
Mode Description
Mode 1
Mode 2
Mode 3