ST STEVAL-ETH001V1 User manual

Introduction

The STEVAL-ETH001V1 servo drive evaluation board has been developed to address three-phase PMSM applications oriented

to multi-axial position control and connectivity.

Motor control power stage hosts the STDRIVE101 half bridge gate driver and six STH270N8F7-2 power MOSFETs. The solution

allows multi-axial position control for PMSM motor, featuring real-time connectivity with EtherCAT stack available on-board.

Moreover, load actuation and interface based on RS485 are possible using CLT03-2Q3, IPS160H and ST3485EI ICs.

Proper board functionality is supported by a power management unit based on L7987L, L7805CD2T-TR and LD39150DT33-R

devices.

The STEVAL-ETH001V1 is equipped with two RJ45 connectors to guarantee daisy-chain connection and a stripline connector to

interface via RS485 digital encoder or host unit (i.e., a PC). For a better noise immunity, the PCB is characterized by a 6-layer

stack and an insulated track for supply line and ground. A quadrature encoder interface with index is present as well.

Figure 1. STEVAL-ETH001V1 evaluation board

Getting started with the low voltage servo drive for multi-axial position control with

multi-protocol Ethernet real-time connectivity

UM2807

User manual

UM2807 - Rev 1 - April 2021

For further information contact your local STMicroelectronics sales office.

www.st.com

1Overview

The STEVAL-ETH001V1 has been developed for motor control applications and multi-axial position control in

factory automation applications.

The board is characterized by a 6-layer stack structure for a better noise immunity and features:

• Ethernet real-time communication with on-board EtherCAT protocol

• Three-phase motor driver inverter based on STDRIVE101 gate driver and STH270N8F7-2 power MOSFET

•STM32F767ZI microcontroller Arm®32-bit Cortex®-M7

• NETX90 network controller

• Operating supply voltage up to 48 V with a max. overvoltage robustness of 60 V

• Max. power dissipation up to 700 W

• Motor brake dissipative energy circuit

• Digital actuation section for industrial loads

• RS485 interface for digital encoder and host interface

• On-board DC-DC converter and linear regulator

The STEVAL-ETH001V1 has a compact form factor to facilitate engine assembly. The board structure can be

schematized as shown below.

Figure 2. Functional block diagram

Power

Management

20 V- 48 V

32 bit Data

Processing

Unit

Quadrature

Encoder

Digital

Actuation

RS485

interface

Brake

circuit

2-ch Digital

Output ICs

2-ch Digital

Input IC

PMSM Motor

Motor Driver

Circuit

Ethernet

Real-time

Connectivity

UM2807

Overview

UM2807 - Rev 1 page 2/40

2Hardware description

2.1 Main blocks

Figure 3. STEVAL-ETH001V1 main blocks

1. Power management

2. Digital actuation

3. Motor driver

4. Supply voltage connection

5. STM32F767ZI MCU

6. SWD connector

7. Ethernet real-time connectivity with NETX90 IC

8. RS485 interface

9. JTAG connector

2.2 Motor driver

The motor driver consists of a three-half bridge with the STH270N8F7-2 power MOSFET driven by the

STDRIVE101 gate driver to drive a three-phase motor embedding quadrature encoder to detect the rotor position.

The STDRIVE101 embeds different blocks mainly featuring:

1. Matched propagation delay for all channels

2. Very short propagation delay of 40 ns

3. Integrated bootstrap diodes

4. 12 V LDO linear regulator (50 mA max.)

5. Embedded VDS monitor for each external MOSFET

6. Overcurrent comparator

7. UVLO and thermal shutdown protection

8. Standby mode for low current consumption operation

Motor driving signals are modulated according to the current sensing and speed feedback.

The sensing network has been built using the TSV991ILT operational amplifier which amplifies the voltage signal

read by three shunt resistors connected in series to each STH270N8F7-2 power MOSFET low side.

UM2807

Hardware description

UM2807 - Rev 1 page 3/40

To limit overvoltage during motor active braking operation, the use of an external brake resistor is supported,

dissipating the motor avalanche energy. It is suggested to connect two resistors (10 Ω 25 W) in parallel with J4

screw connector.

Figure 4. Power stage

Motion Control - Power Stage

Vshu nt _3 _GND

Vshu nt _1 _GND

Vshu nt _2 _GND

CRE2512- FZ- R003E- 3

+15Vcc +Vbus

+Vbus

+15Vcc

3v3

+Vbus

MC_PWM_TIM1_CH1

MC_PWM_TIM1_CH2

MC_PWM_TIM1_CH3

MC_PWM_TIM1_CH1N

MC_PWM_TIM1_CH2N

MC_PWM_TIM1_CH3N

Vshunt_3

Vshunt_1

Vshunt_2

CIN

MC_BKIN

R21

10k

N.M.

R32 33

C23

1uF

R30

10k

R39 33

R24

10k

N.M.

R20 33

C31

1uF

STH270N8F7-2

D31

BAR46FILM

N.M.

R208

10k

C29

100pF

STH270N8F7-2

R40

10k

N.M.

R37

10k

N.M.

R29

10k

N.M.

D32

BAR46FILM

N.M.

TP13

5001

STH270N8F7-2

R209

10k

C208

100uF

N.M.

MOTOR

D38

BAT30KFILM

D36

BAT30KFILM

D33

BAR46FILM

N.M.

R25

R201

R34

R200

U28

STDRIVE101

VS 4

HIN1

HIN2

HIN3

LIN1

LIN2

LIN3

FAULT

GND

GLS3 16

GLS2 20

GLS1 24

OUT3 15

GHS3 14

BOOT3 13

OUT2 19

GHS2 18

BOOT2 17

OUT1 23

GHS1 22

BOOT1 21

DT/MODE

SCREF

REG12 5

R41

C21

470nF

C28

100pF

STH270N8F7-2

C24

1uF

R33

10k

N.M.

R36 33

C30

100pF

C26

100pF

R28 33

C25

100pF

R202

R23 33

D34

BAT30KFILM

STH270N8F7-2

C27

100pF

D39

BAT30KFILM

D35

BAT30KFILM

D37

BAT30KFILM

STH270N8F7-2

HVG1

LVG1

OUT1

OUT3

HVG2

OUT2

LVG2

HVG3

OUT3

LVG3

OUT2

FAULT

UM2807

Motor driver

UM2807 - Rev 1 page 4/40

Figure 5. Sensing network

3v33v3

Vshunt_1Vshunt_1

Vshunt_2Vshunt_2

Vshunt_3Vshunt_3

CURR_FDBK1CURR_FDBK1

CURR_FDBK2CURR_FDBK2

CURR_FDBK3CURR_FDBK3

13k

C16

180pF

C16

180pF

C13

100nF

C13

100nF

R13

1.96k

R13

1.96k

R18

22k

R18

22k

C19

16pF

C19

16pF

R15

536

R15

536

TSV991ILT

5522

1.96k

R16

22k

R16

22k

C17

16pF

C17

16pF

U23

TSV991ILT

U23

TSV991ILT

5522

C18

180pF

C18

180pF

U22

TSV991ILT

U22

TSV991ILT

5522

R12

536

R12

536

C15

180pF

C15

180pF

R10

22k

R10

22k

C20

16pF

C20

16pF

R11

13k

R11

13k

C14

4.7uF

C14

4.7uF

536

C133

4.7uF

C133

4.7uF

C135

4.7uF

C135

4.7uF

R14

13k

R14

13k

R17

1.96k

R17

1.96k

C132

100nF

C132

100nF

C134

100nF

C134

100nF

Motion Control - Current Sensing External op-amp

Vshunt_2Vshunt_2_GND

Vshunt_3_GND

Figure 6. Braking network

+Vbus 3v3

3v3

+Vbus

+15Vcc

3v3

TEMPERATURE MEAS

Vshunt_1

Vshunt_2

VBUS_MEAS

Vshunt_3 CIN

MC_BRAKE

R46

2.2k

R162

4.7k

R44

2.2k

Con2

BAT30KFILM

R43

10K

R42

169k

R50

10k

STH270N8F7-2

C34

10nF

C35

4.7nF

R45

2.2k

R48

9.31k

R47

4.7k

STL6N3LLH6

R49

4.7k

C36

4.7nF

Bus Voltage Sensing Temperature Sensor Over Current Protection

Brake Motor Network for over voltage

energy dissipation

External

Brake

Resistor

UM2807

Motor driver

UM2807 - Rev 1 page 5/40

2.3 Serial interface

The on-board RS485 interface connects the digital absolute encoder based on EnDat, BiSS, and SSi, or

establishes PC communication using a standard serial terminal.

The interface consists of two RS485 (one for the data and one for the clock) based on ST3485EI.

Using J12 jumper, it is possible to select between 5 V and 3.3 V as supply voltage of the digital absolute encoder

connected via U18 connector.

Figure 7. RS485 serial interface

3v3

+5V 3v3

RS485_RX

RS485_TX

RS485_EN

RS-485_TX_CLK

R143 510R

C126

10nF

10V

R153

10k

R207 0R

U18

Encoder Connector

R149 510R

R150

60.4R

J12

SOLDER JUMPER3

R156 510R

R144

60.4R

R157

60.4R

R154 510R

R206 0R

R155

60.4R

U19

ST3485EI

1RO

2RE

3DE

4DI 5

GND

Vcc

C121

10nF

10V

U17

ST3485EI

1RO

2RE

3DE

4DI 5

GND

Vcc

Supply votage

RS485_EN

Supply votage

R207 0R

U18

Encoder Connector

R150

60.4R

R144

60.4R

C121

10nF

10V

Supply votage

2.4 Digital actuation

The circuit implements an actuation power stage, with two digital input channels and two digital output channels;

the digital output allows driving any kind of load (inductive , resistive, and capacitive), guaranteeing a 2.5 A output

current.

Thanks to the integrated active clamp on the IPS160H IC, it is possible to manage demagnetization energy

without any external component, whereas embedded protection in the intelligent power switch provides

robustness against:

1. cut-off and thermal shut-down

2. overcurrent with 2.6 A minimum threshold

3. undervoltage lock-out

4. Vcc disconnection

The diagnostic feature is also available with a dedicated pin to signal:

1. cut-off intervention

2. thermal shut-down intervention

3. open load in off state

The feedback related to load driving can be implemented using the IC CLT03-2Q3 current limiter; in this case, it is

necessary to connect the IPS160H output to the current limiter input stage.

UM2807

Serial interface

UM2807 - Rev 1 page 6/40

Figure 8. Digital input/output circuit

+Vbus+Vbus

3v33v3

+Vbus+Vbus

160H_IN2160H_IN2

160H_IN1160H_IN1

CLT03_OUT2CLT03_OUT2

160H_DIAG1160H_DIAG1

160H_DIAG2160H_DIAG2

CLT03_OUT1CLT03_OUT1

LED RED

AACC

C10

2.2uF

C10

2.2uF

10nF

10k

4.7nF

N.M.N.M.

CLT03-2Q3

PD2PD2

INA2INA2

INATTL2INATTL2 22

INB2INB2

OUTN1OUTN1

INATTL1INATTL1

INA1INA1

INB1INB1

TP1TP1 99

VBUF1VBUF1 1010

OUTP1OUTP1

1111

PD1PD1

1212

OUTN2OUTN2

1313

TP2TP2

1414

VBUF2VBUF2

1515

OUTP2OUTP2

1616

OUTN1_TOUTN1_T

TAB1TAB1

OUTN2_TOUTN2_T

TAB2TAB2

IPS160H

Vcc1Vcc1

ININ

DIAGDIAG

CoDCoD

NC1NC1

NC2NC2

66 GNDGND 77

OUT1OUT1 88

OUT2OUT2 99

OUT3OUT3 1010

OUT4OUT4 1111

Vcc2Vcc2 1212

Vcc_TABVcc_TAB

1313

J14

Con2

J14

Con2

10k

C12

100nF

C12

100nF

IPS160H

Vcc1Vcc1

ININ

DIAGDIAG

CoDCoD

NC1NC1

NC2NC2

66 GNDGND 77

OUT1OUT1 88

OUT2OUT2 99

OUT3OUT3 1010

OUT4OUT4 1111

Vcc2Vcc2 1212

Vcc_TABVcc_TAB

1313

CON3

10nF

4.7nF

N.M.N.M.

100nF

2.2uF

C11

0.1uF

C11

0.1uF

10nF

LED RED

AACC

0.1uF

PD2PD2

Actuator connector

2.5 Power management

The power stage circuit consists of an input stage with 48 V max. operating voltage and 60 V max. overvoltage,

embedding two 330µF/100V electrolytic bulk capacitors with Transil protection, and two DC-DC converters in buck

configuration to regulate the 3.8 V and the 15 V.

The 3.8 V regulates the 3.3 V with max. output current of 1 A for the digital circuit ( i.e. microcontroller, ST3485EI

transceiver, NETX90); the 15 V is used, instead, for the STDRIVE101 digital supply and to regulate the 5 V with

200 mA output current supplying the encoder.

Both regulation circuits have been built using the L7987L switching regulator in TSSOP package. Two linear

regulators have been inserted in series into the switching regulator to improve the ripple on the regulated low

voltage reference (3.3 V and 5 V): in particular, the LD39150DT33-R low drop has been used for the 3.3 V and

the L7805CD2T-TR linear regulator has been used for the 5 V.

Figure 9. DC-DC converter - VBUS to 3.8 V regulation

560.9 kHz

3v8

+Vbus

3v8

C107

47uF

C102

0.1uF

D17

STPS2L60A

R128

C104

1 uF

C105

1 uF

TP1

5001

C103

4.7uF

R133

68k

C98

1uF

R130

10uH

1 2

C100

100pF

C99

820pF

R131

40.2k

L7987L

U14

VBIAS 1

VIN

VIN_2

VCC

SYNCH

COMP 8

FB 9

FSW

ILIM

PGOOD 12

LX 13

LX_2 14

BOOT 15

GND

16 EP

C106

22nF

R129

680R

R132

33k

R134

18k

6SS

U14

C100

10uH

5.6k

C98

C103

TP1

C105C104

C101

22nF

R128

+Vbus

3v8

UM2807

Power management

UM2807 - Rev 1 page 7/40

Figure 10. 3.8 and 3 V regulation

3v33v8

C172

10nF

N.M.

C168

2.2uF

U27 LD39150DT33-R

Vout 2

GND

Vin

C173

0.1uF

C156

1uF

Vin

Figure 11. DC-DC regulation - VBUS to 15 V regulation

+15Vcc

+Vbus

+15Vcc

R136

C116

3.3uF

C120

10uF

TP2

5001

D18

STPS2L60A

C108

1uF

C117

3.3uF

R139

39k

C118

1 uF

R141

2.2k

C112

180pF

R140

39k

1 2

L7987L

U15

VBIAS 1

VIN

VIN_2

VCC

SYNCH

COMP 8

FB 9

FSW

ILIM

PGOOD 12

LX 13

LX_2 14

BOOT 15

GND

16 EP

R138

46.4k

C109

820pF

C119

0.1uF

R135

750R

C115

0.1uF

C206

1 uF

U15

33uH

C114

27nF

R137

3.3k

R136

519.4 kHz

Figure 12. 15 V to 5 V regulation

+5V+15Vcc

C210

0.1uF

C111

1uF

U16

1OUT 3

GND

L7805CD2T-TR

C110

0.1uF

C113

1uF

2.6 Ethernet real-time connectivity

The connectivity core is the NETX90 multi-protocol SoC which integrates two PHYs with 100 Mbps

communication speed, powered by a dual core structure and several peripherals, such as SPI,USART,I2C, CAN,

FMC, ADC and timers.

Communication peripherals (such as SPI and FMC) manage the communication between the controller and the

MCU (feature implemented by dedicated libraries that have been developed by the controller manufacturer).

Other peripherals, such as EnDat2.2 , BiSS and SSi, interface the controller with the encoder in motor control

applications (the related libraries are not implemented at the moment).

The network controller for this application solution is programmed with the EtherCAT protocol, enabling a

communication with low latency and low jitter between master node and slave node.

The protocol stack and the firmware library for STM32 have been developed in demo version by the controller

manufacturer (Hilscher) and are integrated into the application and middleware layers of the STEVAL-ETH001V1

evaluation board.

Daisy-chain communication can be implemented thanks to the two on-board RJ45 connectors.

UM2807

Ethernet real-time connectivity

UM2807 - Rev 1 page 8/40

Figure 13. RJ45 Ethernet connectors

V_LED

PHY0_TXP

PHY0_TXN

PHY0_RXP

MLED2/TRACE_DATA_2

PHY0_RXN

PHY1_TXP

PHY1_TXN

MLED3/TRACE_DATA_3

PHY1_RXP

MLED3/TRACE_DATA_3

PHY1_RXN

MLED2/TRACE_DATA_2

R115 120

Ethernet Connector

TXD+

CT1

TXD-

RXD+

CT2

RXD-

GND

K_LED_GREEN 9

A_LED_GREEN 10

A_LED_YELLOW 12

K_LED_YELLOW 11

SHIELD2 14

SHIELD1 13

C87

0.1uF

C88

0.1uF

R112 270

C130

1nF

250VAC

R113 120C85

0.1uF

C129

0.1uF

Ethernet Connector

TXD+

CT1

TXD-

RXD+

CT2

RXD-

GND

K_LED_GREEN 9

A_LED_GREEN 10

A_LED_YELLOW 12

K_LED_YELLOW 11

SHIELD2 14

SHIELD1 13

R114 270

C86

1nF

250VAC

V_LED

PHY0_TXP

PHY0_TXN

PHY0_RXP

MLED2/TRACE_DATA_2

PHY0_RXN

MLED2/TRACE_DATA_2

Ethernet Connector

TXD+

CT1

TXD-

RXD+

CT2

RXD-

GND

K_LED_GREEN 9

A_LED_GREEN 10

A_LED_YELLOW 12

K_LED_YELLOW 11

SHIELD2 14

SHIELD1 13

R112 270

R113 120C85

0.1uF

C129

0.1uF

C86

1nF

250VAC

Figure 14. Communication status LEDs

V_LED

MLED1/TRACE_DATA_1

MLED0/TRACE_DATA_0

R117 270

D14

LED RED

R118 270

R119 270

D12

LED RED

D15

LED GREEN

A C

R116 270

D13

LED GREEN

A C

COM0

COM1

V_LED

UM2807

Ethernet real-time connectivity

UM2807 - Rev 1 page 9/40

Figure 15. NETX90 device

STRI PLI NE AVAI LABLE

CONSOLE MODE

1v2

3v3

1v2

U0_CTS

U0_RTS

MLED0/TRACE_DATA_0

MLED1/TRACE_DATA_1

PHY0_TXP

PHY0_TXN

PHY0_RXP

PHY0_RXN

PHY1_TXP

PHY1_TXN

PHY1_RXP

PHY1_RXN

ENDAT0_IN/BISS0_SL

ENDAT0_OUT/BISS0_MO

ENDAT0_OE/BISS0_OE

ENDAT0_CLK/BISS0_MA

MMIO04/ADC0-0

MMIO05/ADC0-1

MMIO06/ADC1-0

MMIO07/ADC1-1

UART_RX

UART_TX

ETH_JT_TMS/SWDIO

ETH_JT_TCK/SWDCLK

ETH_nRST

SPI_MISO

SPI_MOSI

SPI_CSn

SPI_CLK

ETH_JT_TDI

ETH_JT_TDO

MLED2/TRACE_DATA_2

MLED3/TRACE_DATA_3

NETX_RESET

DPM0_SPI_DIRQ

DPM1_SPI_DIRQ

MII

ETH

LED

DC-DC MMIO

DPM

FLASH

DEBUG

SYSTEM

U10

NETX90

VSS_A1 A1

VDDIO_A2 A2

HIF_A8 A3

HIF_A5 A4

HIF_A2 A5

HIF_D15 A6

HIF_D12 A7

HIF_D9 A8

HIF_D6 A9

HIF_D3 A10

VDDIO_A11 A11

VSS_A12 A12

VDDC_B1 B1

HIF_A10 B2

HIF_A7 B3

HIF_A4 B4

HIF_A1 B5

HIF_D14 B6

HIF_D11 B7

HIF_D8 B8

HIF_D5 B9

HIF_D2 B10

HIF_D0 B11

VDDC_B12 B12

HIF_A11 C1

HIF_A9 C2

HIF_A6 C3

HIF_A3 C4

HIF_A0 C5

HIF_D13 C6

HIF_D10 C7

HIF_D7 C8

HIF_D4 C9

HIF_D1 C10

JT_TDI

C11

JT_TDO

C12

HIF_A12 D1

HIF_A13 D2

HIF_A14 D3

HIF_A15 D4

HIF_A16 D5

HIF_A17 D6

HIF_BHEN D7

HIF_CSN D8

MII1_RXCLK

JT_TRST

D10

JT_TMS

D11

JT_TCK

D12

HIF_WRN E1

HIF_RDN E2

HIF_RDY E3

MII0_CRS

MII0_COL

PHY1_LED_LINK_IN

PHY0_LED_LINK_IN

MII1_COL

MII1_CRS

MII1_RXER

E10

PHY1_TXN

E11

PHY1_TXP

E12

HFI_SDCLK F1

HFI_DIRQ F2

MII0_RXER

MII0_RXCLK

MII0_TXEN

VSS_F6

VSS_F7

MII1_RXD3/LVDS1_RXN

MII1_RXD2/LVDS1_RXP

MII1_RXDV

F10

PHY1_RXN

F11

PHY1_RXP

F12

SQI_CS0N

SQI_MISO

SQI_SIO2

MII0_RXDV

MII0_TXCLK

VSS_G6

VSS_G7

MII1_RXD1/LVDS1_TXP

MII1_RXD0/LVDS1_TXN

UART_RXD

G10

UART_TXD

G11

PHY_EXTRES

G12

SQI_MOSI

SQI_CLK

SQI_SIO3

MII0_RXD3

MII0_RXD2

MII0_TXD3 / ADC3_IN5

MII0_TXD2 / ADC2_IN4

MII1_TXD3 / LVDS0_TXP

MII1_TXD2 / LVDS0_TXN

MII1_TXCLK / ADC2_IN2

H10

PHY0_RXN

H11

PHY0_RXP

H12

RDY_N

RUN_N

BOD

MII0_RXD1

MII0_RXD0

MII0_TXD1 / ADC3_IN4

MII0_TXD0 / ADC2_IN7

MII1_TXD1 / LVDS0_RXP

MII1_TXD0 / LVDS0_RXN

MLED2 J10

PHY0_TXN

J11

PHY0_TXP

J12 PHY0_VDDC K12

MLED3 K11

MLED1 K10

MII1_TXEN / ADC2_IN3

MII_MDC / ADC2_IN5

COM_IO0 / ADC3_IN2 K7

COM_IO1 / ADC3_IN3 K6

COM_IO2 / ADC3_IN6 K5

COM_IO3 / ADC3_IN7 K4

VSS_K3

VSS_DCDC(GND) K2

DCDC_LX_OUT K1

VDDIO_L1 L1

VREF_ADC

RST_OUT_N

MMIO7 / ADC1_IN1 L4

MMIO5 / ADC0_IN7 L5

MMIO3 / ADC3_IN1 L6

MMIO1/ ADC2_IN1 L7

MII_MDIO/ ADC2_IN6

CLK25OUT

MLED0 L10

PHY_VDDIO L11

VDDIO_L12 L12

VSS_M12 M12

VDDC_M11 M11

OSC_XTO(XTALOUT)

M10

OSC_XTI(XTALIN)

VDD_PLL M8

MMIO0 / ADC2_IN0 M7

MMIO2 / ADC3_IN0 M6

MMIO4 / ADC0_IN0 M5

MMIO6 / ADC1_IN0 M4

RST_IN_N

VDDC_M2 M2

VSS_REF

R87 270

10uH

1 2

25MHz

4 3

600ohm@100MHz

1 2

C83

100nF

R111

2.7k

D10

LED YELLOW

C64

100nF

R89

4.7k

R88 270

C63

100nF

C82

100nF

C69

100nF

R92

10k

R91

N.M.

600ohm@100MHz

1 2

C68

10uF

C72

100nF

C81

10uF

con2-strip-male

C78

100nF

C80

100nF

C73

100nF

D11

LED GREEN

C70

10uF

C74

100nF

C71

0.1uF

C66

100nF

C77

10uF

C76

10uF

C67

10uF

C61

4pF

C65

100nF

SW1

1437566-3

C62

4pF

con2-strip-male

C75

100nF

R90

6.49k

C79

10uF

VDDC_1v2

GND

VDDIO

VDDC_1v2

INTPHY_VDDC

INTPHY_VDDIO

GND_REF GND

GND

XM0_RX

SD_D07

XM0_IO1

SD_D01

SD_D03

SD_D05

XM0_IO0

SD_D00

SD_D04

SD_D06

GND_REF

SD_D02

XM0_TX

OSC_XTO

OSC_XTI

GND

RDY

RUN

NETX_RESET

RESET_OUT

CLK25

UART_RX

UART_TX

GND_REF

GND

3v3_BOD

NETX_RESET

VDDC_1v2

RDY

GND

RUN

GND

INTPHY_VDDC

VDDIO

OSC_XTO

OSC_XTI

INTPHY_VDDIO

BOOT MODE

UM2807

Ethernet real-time connectivity

UM2807 - Rev 1 page 10/40

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