EtherCAT Development Kit Hardware. Page 1

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1 EtherCAT Development Kit Hardware Page 1

2 Contents Overview... 3 Introduction... 3 References... 4 Board Details and Configuration... 5 Overview... 5 Power Supply... 6 Micro USB... 6 Expansion Connectors... 6 Expansion Connectors... 7 I/O Header... 7 Pmod... 8 Arduino... 9 Page 2

3 Overview Introduction The PMOD-COM-ETHERCAT EtherCAT Starter Kit is based on the Microchip LAN9252 EtherCAT Slave controller. The easy to use EtherCAT Starter Kit has a Pmod and Arduino compatible interface, as well as a header with all I/Os of the LAN9252, which allows the direct connection to microcontroller starter kits from many suppliers for fast prototyping. The LAN9252 is a 2-port EtherCAT Slave Controller (ESC) with dual integrated Ethernet PHYs which each contain a full-duplex 100BASE-TX transceiver and support 100Mbps (100BASE-TX) operation. 100BASE-FX is supported via an external fibre transceiver. Each port receives an EtherCAT frame, performs frame checking and forwards it to the next port. Time stamps of received frames are generated when they are received. The Loop-back function of each port forwards the frames to the next logical port if there is either no link at a port, if the port is not available, or if the loop is closed for that port. The Loop-back function of port 0 forwards the frames to the EtherCAT Processing Unit. The loop settings can be controlled by the EtherCAT master. Packets are forwarded in the following order: Port 0 -> EtherCAT Processing Unit -> Port 1 -> Port 2. The EtherCAT Processing Unit (EPU) receives, analyses and processes the EtherCAT stream. The main purpose of the EtherCAT Processing unit is to enable and coordinate access to the internal registers and the memory space of the ESC, which can be addressed both from the EtherCAT master and from the local application. Data exchange between master and slave applications is comparable to a dual-ported memory (process memory), enhanced by special functions for consistency checking (SyncManager) and mapping (FMMU). Each FMMU performs bitwise mapping of logical EtherCAT system addresses to physical device addresses. A simplified block diagram of the PMOD-COM-ETHERCAT is shown in Figure 1.1 Page 3

Figure 1.1 Block diagram PMOD-COM-ETHERCAT References Concepts and material available in the following documents may be helpful when reading this document. Visit http://www.avnet-silica.

4 Figure 1.1 Block diagram PMOD-COM-ETHERCAT References Concepts and material available in the following documents may be helpful when reading this document. Visit for the latest PMOD-COM-ETHERCAT documentation Getting Started User s Guide ESI Device Description Files Application Example Visit for the latest LAN9252 documentation LAN9252 Data Sheet AN Microchip LAN9252 Migration from Beckhoff ET1100 AN AN1911 Microchip LAN9252 Power Management AN AN1916 Integrating Microchip's LAN9252 SDK with Beckhoff's EtherCAT SSC AN AN1920 Microchip LAN9252 EEPROM Configuration and Programming AN LAN9252 SOC Porting Guidelines Visit for further information about EtherCAT technology, specification, FAQ and ETG membership. Page 4

Board Details and Configuration This Chapter describes the hardware and configuration of the EtherCAT Starter Kit Overview Board overview and interfaces EEPROM I/O Header LAN9252 IOs EtherCAT IN (ETH

5 Board Details and Configuration This Chapter describes the hardware and configuration of the EtherCAT Starter Kit Overview Board overview and interfaces EEPROM I/O Header LAN9252 IOs EtherCAT IN (ETH A) Pmod SPI / QSPI EtherCAT OUT (ETH B) Micro USB 5V Power LAN9252 Reset Run LED Power LED Arduino out LDO Jumper GPIO LED Figure Board view The EtherCAT Slave Starter Kit PMOD-COM-ETHERCAT is based on the Microchip LAN9252 EtherCAT slave controller. The Starter Kit offers two RJ45 EtherCAT Ports, Pmod compatible and Arduino compatible interfaces to connect to a variety of MCU starter kits, as well as Header with all the LAN9252 I/Os. Power is supplied via the Micro USB connector or the expansion connectors. The LAN9252 EtherCAT slave controller has integrated 100base-TX PHYs with auto-mdix, cable diagnostic and support for 100base-FX fibre as well (fibre option not available on this kit). The flexible host interface can be configured as SPI, QSPI or 8/16bit parallel interface. The LAN9252 supports Digital I/O, Microcontroller and Expansion Modes. The Starter Kit is preconfigured in Digital I/O mode. Page 5

Power Supply Power Supply Options The Starter Kit supports multiple power supply options. The LAN9252 operates at 3.3V and all I/Os are 3.3V as well.

6 Power Supply Power Supply Options The Starter Kit supports multiple power supply options. The LAN9252 operates at 3.3V and all I/Os are 3.3V as well. Micro USB The Starter Kit can be powered via the Micro USB connector from any USB port or USB power supply. The on-board LDO provides 3.3V to the LAN9252. The LED Jumper needs to be closed. When power is supplied to the board, the Power LED is on. Setting: LDO Jumper: closed Micro USB 5V Power Power LED LDO Jumper closed Figure Power: Micro USB, LDO Jumper closed Expansion Connectors The Starter Kit can be powered through the I/O Header, Pmod and Arduino compatible Interfaces. Pmod The Pmod connector (J303) can supply the starter kit with 3.3V, the LDO Jumper needs to be open. 3.3V: J303-6, 12 GND: J303-5, 11 Setting: LDO Jumper: open I/O-Header The board can be supplied through the 3.3V pins of the I/O header (J302), the LDO jumper needs to be open. 3.3V: J302-2, 4 GND: J302-39, 40 Setting: LDO Jumper: open Page 6

7 Arduino The Arduino connector (J304) offers 3V supply, the LDO jumper needs to be open. 3.3V: J304, 4 GND: J304, 6, 7 Setting: LDO Jumper: open Expansion Connectors out off the Expansion Connectors The Starter Kit has three expansion connector options to connect to an application MCU or MPU and access the LAN9252 I/Os. I/O Header All the LAN9252 signals are available on the I/O Header. The pin functions changes based on the device s mode of operation. For more details on the operation modes see the LAN9252 sheet. The starter kit is preconfigured in Digital I/O mode. I/O Header Digital I/O SPI with GPIO SPI with MII 1 5V 2 3.3V 3 5V 4 3.3V HBI indexed HBI multiplexed LAN DIGIO0 GPI0/GPO0 MII_RXCLK D6 AD DIGIO1 GPI1/GPO1 MII_MDC D7 AD DIGIO2 GPI2/GPO2 MII_MDIO D8 AD DIGIO3 GPI3/GPO3 MII_LINK D4 AD DIGIO4 GPI4/GPO4 MII_TXEN D10 AD DIGIO5 GPI5/GPO5 MII_TXD0 D11 AD DIGIO6 GPI6/GPO6 MII_TXD1 D12 AD DIGIO7 GPI7/GPO7 13 DIGIO8 GPI8/GPO8 MII_TXD2/ TX_SHIFT0 MII_TXD3/ TX_SHIFT1 D13 D14 AD13 AD14 14 DIGIO9 GPI9/GPO9 MII_RXER A0/D15 AD DIGIO10 GPI10/GPO10 LINKACTLED2/ MII_LINKPOL A2 ALEHI 16 DIGIO11 GPI11/GPO11 MII_RXDV A DIGIO12 GPI12/GPO12 MII_RXD0 A Page 7

8 I/O Header Digital I/O SPI with GPIO SPI with MII HBI indexed HBI multiplexed LAN DIGIO13 GPI13/GPO13 MII_RXD1 CS DIGIO14 GPI14/GPO14 MII_RXD2 WR/ENB DIGIO15 GPI15/GPO15 MII_RXD3 RD/RD_WR RST# NC - 23 EOF SO/SIO1 D1 AD OUTVALID SCS# D5 AD WD_STATE SI/SIO0 D0 AD IRQ WD_TRIG SIO3 D3 AD LATCH_IN SCK D9 AD NC - 30 SOF SIO2 D2 AD OE_EXT - MII_CLK25 A1 ALELO NC - 33 EESDA/TMS EESCL/TCK RUNLED/E2PSIZE LINKACTLED1/TDI/CHIP_MODE LINKACTLED0/TDO/CHIP_MODE NC - 39 GND 40 GND Note: 17 20: Signals DIGIO12, DIGIO13, DIGIO14, DIGIO15 are connected to on-board LEDs. 35: RUNLED/E2PSIZE is connected to on-board LED 36: LINKACTLED1/TDI/CHIP_MODE1 is connected to on-board LED. 37: LINKACTLED0/TDO/CHIP_MODE0 is connected to on-board LED. Pmod The Pmod compatible interface is a Type 2A (expanded SPI) interface as defined in the Diligent Pmod specification. In addition to the SPI interface, it can be configured to QSPI by using the not specified pins for the additional signals. Page 8

9 Pmod SPI Mode (Standard) 1 SCS# 2 SI 3 SO 4 SCK Description QSPI Mode Description LAN9252 Slave chip select Slave Serial Data Input Slave Serial Data Output Slave Serial Clock SCS# Slave select 50 SIO0 SIO1 Slave Serial Data Input/Output Bit 0 Slave Serial Data Input/Output Bit SCK Slave Serial Clock 19 5 GND Ground GND Ground 6 3.3V VCC 3.3V VCC 7 - Not connected - Not connected 8 RST# Reset RST# Reset 11 9 See note See note 10 See note See note SIO2 (see note) SIO3 (see note) 11 GND Ground GND Ground V VCC 3.3V VCC Slave Serial Data Input/Output Bit 2 Slave Serial Data Input/Output Bit Note: 9 / 10: This pins are not specified by Diligent and can be used as custom specific I/Os. The signals SIO2 and SIO3 are connected via zero ohm resistors. The resistors can be removed to resolve possible conflicts with the Pmod host, in this case only the SPI mode is available. Arduino The starter kit is prepared with Arduino compatible pinout. The headers are not mounted. The pin functions changes based on the device s mode of operation. For more details on the operation modes see the LAN9252 sheet. The starter kit is preconfigured in Digital I/O mode. Caution: Carefully check the I/O voltage and power options of the host board. The LAN9252 EtherCAT starter kit supports 3.3V I/O voltage (5V tolerant) and has no level shifter implemented. J304 (Arduino Power) Arduino 1 NC 2 NC Signal Description Note LAN9252 Page 9

10 Arduino Signal Description Note LAN RST# Reset V VCC Remove LDO jumper, see chapter Power supply 5 6 GND Ground 7 GND Ground 8 NC J306 (Arduino Analog) Used as digital I/O. Arduino SPI with GPIO Description Digital I/O Description LAN NC 2 NC 3 GPI15/GPO15 DIGIO15 bidirectional 31 4 GPI14/GPO14 DIGIO14 bidirectional 30 5 GPI13/GPO13 DIGIO13 bidirectional 28 6 GPI12/GPO12 DIGIO12 bidirectional 27 J305 (Arduino Digital) Arduino SPI with GPIO Description Digital I/O Description LAN GPI8/GPO8 DIGIO8 2 GPI9/GPO9 DIGIO9 bidirectional bidirectional SCS# Slave chip select OUTVALID Output valid 50 4 SO Slave Serial Data Output EOF End of Frame output 13 5 SI Slave Serial Data Input WD_STATE SyncManager Watchdog State output 17 6 SCK Slave Serial Clock LATCH_IN external latch signal 19 7 GND Ground GND Ground 8 NC NC 9 NC NC 10 NC NC Page 10

11 J307 (Arduino Digital) Arduino SPI with GPIO Description Digital I/O Description LAN GPI0/GPO0 2 GPI1/GPO1 3 IRQ 4 SYNC0/LATCH1 5 SYNC0/LATCH0 6 GPI5/GPO5 7 GPI6/GPO6 8 GPI7/GPO7 LAN9252 Interrupt Distributed Clock Sync (OUT) or Latch (IN) Distributed Clock Sync (OUT) or Latch (IN) DIGIO0 DIGIO1 IRQ SYNC1/LATCH1 SYNC0/LATCH0 DIGIO5 DIGIO6 DIGIO7 bidirectional bidirectional LAN9252 Interrupt Distributed Clock Sync (OUT) or Latch (IN) Distributed Clock Sync (OUT) or Latch (IN) bidirectional bidirectional bidirectional Page 11

12 EtherCAT is registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany. All trademarks and logos are the property of their respective owners. This document provides a brief overview only, no binding offers are intended. No guarantee as to the accuracy or completeness of any information. All information is subject to change, modifications and amendments without notice. Page 12

REV CHANGE DESCRIPTION NAME DATE. A Release B Corrected E2PSIZE Configuration Strap Information, Page

REV CHANGE DESCRIPTION NAME DATE A Release 6-12-15 B Corrected E2PSIZE Configuration Strap Information, Page 23 10-15-15 Any assistance, services, comments, information, or suggestions provided by Microchip