SNLU289 September   2020 DP83TG720R-Q1 , DP83TG720S-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Overview
    2. 1.2 Hardware Features
    3. 1.3 Software Features
    4. 1.4 Block Diagram
  3. 2Board Overview
    1. 2.1 Components
    2. 2.2 Connectivity
      1. 2.2.1 Network Interfaces
      2. 2.2.2 USB Connection
      3. 2.2.3 Power Connection
  4. 3Quick Start
    1. 3.1 Jumper and DIP-Switch Settings
    2. 3.2 USB 2 MDIO Tool for Debugging and Configuration
  5. 4Configuration
    1. 4.1 Default Configuration
    2. 4.2 DIP-Switches and Operation Modes
    3. 4.3 DIP-Switch Settings Overview
  6. 5Update MSP430 Software Using UniFlash
  7. 6Schematic, Board Layout, and Bill of Materials
    1. 6.1 Schematic
    2. 6.2 Board Layout
    3. 6.3 Bill of Materials

2.1 Components

Figure below gives a quick ovrview of the media converter board. The marked sections are described in the table below.

GUID-20200914-CA0I-5RR9-DXR8-TKF9LJBXKJDC-low.gif Figure 2-1 Connectors, Jumpers and LEDs

Table 2-1 Component Table
Section Decsription
1 RJ45 G-Bit network connection
2 TE Matenet connector for automotive ethernet
3 Rosenberger H-MTD connector for automotive ethernet
4 5 VDC to 30 VDC auxiliary power connector. Maximum current consumption <= 500 mA
5 Micro USB connector for power supply and debugging
6 Spy-Bi-Wire JTAG connector for programming the MSP430
7 GND test connection for supply voltage or measuring
8 V+ test connection for supply voltage (5-30V) or measuring
9 867 PHY status indicator LEDs at RJ45 connector:
  • Green LED: on when 1000Base-T link established
  • Yellow LED: on when 100Base-T link established
  • Orange LED: blinks while transmit/receive activity
10
  • D8 on green when in normal mode.
  • D8 on red when in sleep mode .
  • D9 on green when standard configuration script applied.
  • D10 depends on signal quality indicator :
    • Red = Bad
    • Red and Green = Good
    • Green = Excellent
11 Power indicator LEDs.

  • D21 : Auxiliary power supply indicator
  • D23 : 1V indicator
  • D11 : 2.5V indicator
  • D16 : 3.3V indicator
12 Power connection jumpers.

The DP83TG720 power rail can be disconnected via the corresponding power jumper :

  • J20 : 3.3V supply connection.
  • J21 : 1V supply connection.
13 DIP-Switches for board configuration selection.
14 MSP430 Reset jumper J19 (disconnect when programming)
15 MDIO jumpers (J14). These jumpers determine the MDIO interface.
16 Reset button. Performs a power on reset.
17 Reset indicator LED
18 720 PHY Master/Slave selection jumper (J2).

  • J2 set to 1-2 : 720 is Master

  • J2 set to 2-3 the 720 is Slave
19 720 PHY status indicator LEDs:

  • D2 lights up when Link is Down. Blinks while transmit/receive activity.
  • D3 lights up when Link is established and 720 is Master.
  • D4 lights up when Link is established and 720 is Slave

20 SMA connector (J21) for external CLOCK_IN for 720 PHY, when no crystal is installed and R26 (0 ohms) is placed.
21 DP83TG720 Ethernet PHY.