Texas Instruments DP83TC812EVM-MC Manuale utente

User’s Guide

DP83TC812EVM-MC User's Guide

ABSTRACT

This User’s Guide discusses how to properly operate and configure the DP83TC812 Media Converter EVM. For

best layout practices, schematic files, and Bill of Materials, see the associated support documents.

Figure 1-1. DP83TC812EVM-MC

Table of Contents

1 Revision History......................................................................................................................................................................2

2 Introduction.............................................................................................................................................................................3

2.1 Key Features......................................................................................................................................................................3

2.2 Operation – Quick Setup....................................................................................................................................................4

3 Board Setup Details................................................................................................................................................................7

3.1 Block Diagram....................................................................................................................................................................7

3.2 Configuration Options........................................................................................................................................................ 7

4 Definitions............................................................................................................................................................................... 8

5 Schematics..............................................................................................................................................................................9

5.1 Main Block Schematic........................................................................................................................................................9

5.2 DP83867 Schematic........................................................................................................................................................ 10

5.3 Power Schematic..............................................................................................................................................................11

5.4 AFE Schematic................................................................................................................................................................ 12

5.5 Comms Schematic........................................................................................................................................................... 13

5.6 Hardware Schematic........................................................................................................................................................14

6 Layout.................................................................................................................................................................................... 15

www.ti.com Table of Contents

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DP83TC812EVM-MC User's Guide 1

List of Figures

Figure 1-1. DP83TC812EVM-MC................................................................................................................................................ 1

Figure 2-1. DP83TC812EVM-MC – Top Side.............................................................................................................................. 3

Figure 2-2. DP83TC812EVM-MC – Bottom Side........................................................................................................................ 4

Figure 2-3. Onboard Supply Connection and Jumpers............................................................................................................... 4

Figure 2-4. VSLEEP and WAKE Jumpers................................................................................................................................... 5

Figure 2-5. On-board MSP connections for MDIO and MDC...................................................................................................... 5

Figure 2-6. DP83TC812 configured as Master............................................................................................................................ 6

Figure 2-7. Wake pin in pulled up position...................................................................................................................................6

Figure 3-1. DP83TC812EVM-MC Block Diagram........................................................................................................................7

Figure 5-1. Main Schematic.........................................................................................................................................................9

Figure 5-2. DP83867 Schematic................................................................................................................................................10

Figure 5-3. Power Schematic.....................................................................................................................................................11

Figure 5-4. AFE Schematic........................................................................................................................................................12

Figure 5-5. Comms Schematic.................................................................................................................................................. 13

Figure 5-6. Hardware Schematic............................................................................................................................................... 14

Figure 6-1. Top Overlay............................................................................................................................................................. 15

Figure 6-2. Bottom Overlay........................................................................................................................................................16

1 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision * (November 2020) to Revision A (March 2022) Page

• Updated EVM User Guide throughout to reflect new board............................................................................... 3

Trademarks

All trademarks are the property of their respective owners.

Revision History www.ti.com

2DP83TC812EVM-MC User's Guide SNLU292A – NOVEMBER 2020 – REVISED MARCH 2022

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2 Introduction

The DP83TC812EVM-MC supports 100-Mbps speed and is IEEE 802.3bw compliant. There is an on-board

MSP430F5528 for use with the USB2MDIO graphical user interface tool. DP83867 is provided for copper

(100BASE-TX) support using RGMII MAC Interface.

2.1 Key Features

• Media Converter: 100BASE-T1 to 100BASE-TX

• IEEE802.3bw Compliant

• IEEE802.3u Compliant

• RGMII Back-to-Back Configuration

• On-board MSP430F5528

– USB-2-MDIO Support

• Status LEDs

– DP83TC812

• Link

• Link + Activity

– DP83822

• Link (RJ-45)

– Power-on Indicator (D21, D16, D17, D14, D19, D13)

– SMI Command

• Variable VDDMAC Voltage Range: 1.8 V, 2.5 V, and 3.3 V

Figure 2-1. DP83TC812EVM-MC – Top Side

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DP83TC812EVM-MC User's Guide 3

Figure 2-2. DP83TC812EVM-MC – Bottom Side

2.2 Operation – Quick Setup

2.2.1 Onboard Power Supply Operation

• EVM can operate from a single supply connected to the turret or barrel jack connector through TP8 (TP9 is

GND)

– Wide Vin: 5 V to 30 V

• Place shunts on J20, and J21 to enable LDOs for VDD3P3, and VDD1P0

• Place shunt on VDDMAC. This supply can have adjustable voltages depending on location of shunt.

– J1 for 3.3V operation

– J3 for 1.8V operation

– J5 for 2.5V operation

• Place shunts on J23 and J10 (left and center) to enable VSLEEP LDO and keep WAKE pin high

Figure 2-3. Onboard Supply Connection and Jumpers

Introduction www.ti.com

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Figure 2-4. VSLEEP and WAKE Jumpers

Note

• The board can be powered over USB by populating J9. Ensure external supply is not connected to

TP8.

• This header has a 5-V maximum limit

2.2.2 SMI Connection and Communication

2.2.2.1 On-board MSP Connection

• To connect the DP83TC812 and DP83867 to the on-board MSP430 for MDIO and MDC communication:

– Populate J14 as indicated in figure below

Note

• To use external MSP connection, please remove jumpers on J14 and connect MDC to top-left most

pin and MDIO to top-right most pin

• Cross-connection rewrok required for Rev A board not required for Rev B (current) board

Figure 2-5. On-board MSP connections for MDIO and MDC

2.2.2.2 Downloading USB2MDIO for SMI

The on-board MSP430 comes pre-programmed and ready to use. When using this EVM for the first time on a

Windows 10 PC, MSP430 drivers and USB-2-MDIO software utility need to be installed. USB-2-MDIO software

can be used for accessing the PHY's registers. The software is available to download along with its user's guide

in the link.

USB2MDIO

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DP83TC812EVM-MC User's Guide 5

2.2.2.3 SMI Interface

Note

• DP83TC812 PHY_ID on EVM is 10

• DP83867 PHY_ID on EVM is 01

After installing and enabling the USB2MDIO tool, power on the EVM and connect to the computer through the

micro-USB port. Verify communication on each PHY by reading register 0x0001.

• DP83TC812 will read 0x1 = 0x0061 with no link partner and 0x1 = 0x0065 with a link partner connected

• DP83867 will read 0x1 = 0x7949 with no link partner and 0x1 = 0x796D with a link partner connected

• To enable analog loopback on the DP83TC812, write 0x0108 to address 0x0016

2.2.3 Master and Slave Mode Selection – DP83TC812

• Master Mode

– Place shunt across pins 1 and 2 of J2 as demonstrated in figure below

• Slave Mode

– Place shunt across pins 2 and 3 of J2

Figure 2-6. DP83TC812 configured as Master

2.2.4 Wake Selection – DP83TC812

• Place shunt in PU position at WAKE header shown to pull wake pin of DP83TC812.

• Place shunt in GND position at WAKE header shown to pull down wake pin of DP83TC812.

Figure 2-7 shows jumper in PU position on header.

Figure 2-7. Wake pin in pulled up position

2.2.5 LED Indication

• Look for LED_0 (D3 or D4) and LED_1 (D2) to illuminate when a link is successfully established on the

DP83TC812

• Look for LED to illuminate on the RJ45 when a link is successfully established on the DP83867

• LED_1 (D2) will blink for TX/RX activity

Introduction www.ti.com

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3 Board Setup Details

3.1 Block Diagram

VBAT Wide Vin 3.3V

Regulator

DC-DC 5V

DP83TC812

VDDA VDDIO VDDMAC VSLEEP

DP83867

VDD1P0 VDD2P5 VDDIO

2.5V LDO 3.3V LDO

RJ-45 w/

Integrated

Magnetics CMC Automotive

Connector

25MHz Crystal Clk

Source Status LEDs

PHY ID + RGMII

Straps

25MHz Crystal Clk

Source or SMA Status LEDs

PHY ID + RGMII

Straps

CLKOUT

MSP430F5528

USB2MDIO

USB

MDIO MDC

RGMII

1.0V LDO

Figure 3-1. DP83TC812EVM-MC Block Diagram

3.2 Configuration Options

3.2.1 Clock Configuration

• Onboard Clock

– The onboard crystal is enabled by default

• External Clock

– Remove R97 and Y1

– Populate R26 with a 0-Ω resistor

– Use the SMA labeled CLK_IN to input the external clock source

www.ti.com Board Setup Details

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DP83TC812EVM-MC User's Guide 7

4 Definitions

Terminology

PHY Physical Layer Transceiver

MAC Media Access Controller

SMI Serial Management Interface

MDIO Management Data I/O

MDC Management Data Clock

RGMII Reduced Gigabyte Media Independent Interface

SFD Start-of-Frame Detection

VDDA Analog Core Supply Rail

VDDIO Digital Supply Rail

PD Pull-down

PU Pullup

MC Micro-controller

Definitions www.ti.com

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5 Schematics

5.1 Main Block Schematic

GND

R26

GND

TRD_N

TRD_P

LED_0

LED_1

GND

R31

CLKOUT

INT

MDIO

MDC

DP83TC812_RESET_N

2 1

+3V3

GND

2 1

GND

LED_1

2.49k

R1 2.49k

2.49k

R16

LED_0

VDDA3P3

10uF

C20

0.1uF

C14

0.1uF

C22

0.1uF

C16

10uF

C11

10uF

C19

VDDIO

VDDA3P3

10uF

C25

+3V3

+1V0

GND

Vin

R17

R19

2.2k

R12

2.2k

R3 2.2k

GND

INT

INH

VDDIO1

VDDIOVDDMAC

50V

0.1uF

C29

TSW-101-07-G-S

867_TX_CTRL

867_TX_CLK

22R78

R79

812_RX_CTRL

812_RX_CLK

812_TX_CLK

812_TX_CTRL

812_TX_D3

812_TX_D2

812_TX_D0

812_TX_CLK

812_TX_CTRL

812_TX_D1

812_TX_D2

812_TX_D3

812_TX_D1

812_TX_D0

2.49k

R95

812_RX_D2

GND

10uF

C24

GND

100

R97

0.1uF

C18

R98

GND

50V

0.1uF

C3350V

0.1uF

C34

+3V3

2.2k

R101

2.2k

R102

VDDIO 0

R100

+3V3

1.00k

R28

VDDMAC

VDDIO1 VDDMAC

VDD1P0_1

VDD1P0_2

VDD1P0_1

VDD1P0_2

Sleep Supply

MDC 1

INT 2

RESET 3

4XI

LED_1/GPIO_1

6VSLEEP 7

WAKE 8

NC 9

INH 10

VDDA 11

TRD_P

TRD_M

RX_ER 14

RX_DV/CRS_DV/RX_CTRL 15

CLKOUT/GPIO_2

GND_ESC

17 GND_ESC

NC 19

NC 20

NC 21

VDDMAC 22

RX_D3 23

RX_D2 24

RX_D1 25

RX_D0 26

RX_CLK 27

TX_CLK 28

TX_EN/TX_CTRL 29

TX_D3 30

TX_D2 31

TX_D1 32

TX_D0 33

VDDIO 34

LED_0/GPIO_0

MDIO 36

GND

DP83TC812R-Q1

VSLEEP

867_TX_D2

867_TX_D3

22R6

867_TX_D0

867_TX_D1

22R2

812_RX_D0

812_RX_D1

812_RX_D2

812_RX_D3

2.2k

R10

GND

J10

TSW-103-07-G-S

WAKE_812

VSLEEP

VDDMAC

VDDMAC_1P8

VDDMAC_2P5

R11

812

720

811

R100 R17 R19 R96 R11

DNP DNP

DNP

VSLEEP

GND

VDDMAC

J23

How to Con



gure Between DP83TC812, DP83TC811, DP83TG720

10uF

0.1uF

C21

0.01uF

C26

2.2uF

C13

GND

0.1uF

C32

0.01uF

C96

2.2uF

C27

GND

0.01uF

C97

2.2k

R13

VDDMAC

812_RX_ER

2GND 4

DNC

PAD 7

OUT 6

GND 3

TPS7B8133QDRVRQ1

U10

10uF

C98

0.1uF

C99

0.047uF

C100

GND

25V

470nF

1 2

BLM18KG601SH1

1 2

BLM18KG601SH1

10.0k

R120

10.0k

25V

470nF

C10

25V

470nF

C12

10nF

C15

10nF

C17

10nF

C23

22pF

50V

C30

22pF

50V

C31

Figure 5-1. Main Schematic

www.ti.com Schematics

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DP83TC812EVM-MC User's Guide 9

5.2 DP83867 Schematic

CLK_OUT

GPIO_0

GPIO_1

GTX_CLK

INT/PWDN

JTAG_CLK 20

JTAG_TDI 23

JTAG_TDO 21

JTAG_TMS 22

LED_0 47

LED_1 46

LED_2 45

MDC 16

MDIO 17

PAD 49

RBIAS 12

RX_CLK

32 RX_CTRL

RX_D0/SGMII_COP

RX_D1/SGMII_CON

RX_D2/SGMII_SOP

RX_D3/SGMII_SON

TD_M_A 2

TD_M_B 5

TD_M_C 8

TD_M_D 11

TD_P_A 1

TD_P_B 4

TD_P_C 7

TD_P_D 10

TX_CTRL

TX_D0/SGMII_SIN

TX_D1/SGMII_SIP

TX_D2

TX_D3

VDD1P0 42

VDD1P0 31

VDD1P0 24

VDD1P0 6

VDDA1P8 48

VDDA1P8 13

VDDA2P5

VDDIO

X_I

X_O

RESET

DP83867ERGZR

2.20k

R37

GND

11.0k

R36

LED01

LED11

LED2183867_RESET_N

10V

10uF

C45

50V

0.1uF

C47

25V

1uF

C46

+2V5_REG

GNDGND

MDIO

MDC

83867_RESET_N

867_TX_D0

10V

10uF

C63

50V

0.1uF

C65

25V

1uF

C64

10V

10uF

C55

50V

0.1uF

C57

25V

1uF

C56

GND

GNDGND

867_TX_D0

GND867

50V 0.1uF

C37

50V 0.1uF

C38 50V

0.1uF

C41 50V

0.1uF

C42

GND

50V

0.1uF

C59

50V

0.1uF

C61

50V

0.1uF

C49

50V

0.1uF

C51

50V

0.1uF

C53

50V

0.1uF

C67

TD_A_P

TD_A_N

TD_B_P

TD_B_N

TD_C_P

TD_C_N

TD_D_P

TD_D_N

0R38

LED21

470

R32

470

R34

LED11

LED01

2.49k

R33

GND867 GND

0.01 µF

1kV

C36

+1V0_867

+2V5_867

1.0M

R35

+1V0_REG +1V0_867

+2V5_867

867_TX_CLK

867_TX_CTRL

867_TX_CLK

867_TX_CTRL

22R80

22R81

867_TX_D1

867_TX_D2

867_TX_D3

867_TX_D1

867_TX_D2

867_TX_D3

867_RX_CTRL

867_RX_CLK

867_RX_D0

867_RX_D1

867_RX_D2

867_RX_D3

22R82

22R83

22R84

22R85

812_TX_D0

812_TX_CLK

812_TX_CTRL

812_TX_D1

812_TX_D2

812_TX_D3

GND

5.76k

R94

VDDMAC VDDIO_867

VDDIO_867

GND

RX_D0 = Mode 2

867_RX_D0

VDDIO_867

GND

5.76k

R15

RX_CTRL = Mode 3

867_RX_CTRL

VDDIO_867

2.49k

R18

2.49k

R20

TD_A_N

TD_A_P

TD_B_P

TD_B_N

TD_C_N

TD_C_P

TD_D_P

TD_D_N

10nF

C48

10nF

C50

10nF

C52

10nF

C54

10nF

C58

10nF

C60

10nF

C62

10nF

C66

10nF

C68

27pF

50V

C43

27pF

50V

C44

10.0k

R14

MDCT3

MD3-

MD3+

MD2+

MD2-

MDCT2

MDCT4

MD4+

MD4-

MD1-

MD1+

MDCT1

YELLOW_CATHODE

YELLOW_ANODE

GREEN_CATHODE

GREEN_ANODE

MNT_1

MNT_2

J12

AR11-4647

1 2

Figure 5-2. DP83867 Schematic

Schematics www.ti.com

10 DP83TC812EVM-MC User's Guide SNLU292A – NOVEMBER 2020 – REVISED MARCH 2022

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