CHANNEL B CHANNEL A LEDs LEDs SWITCH ISOLATION USB Click here for production status of specific part numbers. Evaluates: MAX14819/MAX14819A MAX14819 Evaluation Kit General Description Quick Start The MAX14819 evaluation kit (EV kit) consists of the Recommended Equipment evaluation board and software. The EV kit is a fully assembled MAX14819 EV kit (USB A-to-B cable included) and tested circuit board that evaluates the MAX14819A User-supplied Windows 7 PC with a spare USB port IO-Link dual-channel master transceiver. 24V, 1A DC power supply* The EV kit includes Windows 7-compatible software that provides a graphical user interface (GUI) for exercising Multimeter/voltmeter the features of the device. The EV kit is connected to a *L+A and L+B are each configured for a 1A (typ) current PC through a USB A-to- micro B cable. limit, so a higher load-capable power supply may be The MAX14819 EV kit can also be used to evaluate the required for testing. MAX14819. Note: In the following sections, software-related items are identified by bolding. Text in bold refers to items directly Features from the EV kit software. Text in bold and underlined IO-Link-Compliant Device Transceiver refers to items from the Windows operating system. IO and SPI Interface Terminals Procedure Windows 7-Compatible Software The EV kit is fully assembled and tested. Follow the steps USB-PC Connection below to verify board operation before exercising the full features of the device: Proven PCB Layout 1) Visit www.maximintegrated.com/evkitsoftware to Fully Assembled and Tested download the latest version of the EV kit software, MAX14819EVKITSetupVx.xx.ZIP. Save the EV kit software Ordering Information appears at end of data sheet. to a temporary folder and uncompress the ZIP file. MAX14819 EV Kit Block Diagram TESTPOINTS MAX14819 EV KIT ADDRESS L+B SUPPLY LINE FETs SELECTION SPI LINES MAX14819A FTDI USB-TO-SPI L+A SUPPLY LINE FETs IO-Link is a registered trademark of Profibus User Organization (PNO). Windows, Windows XP, and Windows Vista are registered trademarks and registered service marks of Microsoft Corporation. 319-100003 Rev 3 2/21Evaluates: MAX14819/MAX14819A MAX14819 Evaluation Kit 2) Install the EV kit software and USB driver on your setting. When all of the bits are set as desired, click on the computer by running the MAX14819EVKITSetupVx. Write Changes button to write the changed bit settings to xx.EXE program inside the temporary folder. The the MAX14819A over the SPI interface. program files are copied to your PC and icons are Note that full IO-Link communication is not available using created in the Windows Start Programs Maxim the EV kit GUI. Please use the MAXREFDES145 for full Integrated menu. During software installation, some IO-Link communication with the MAX14819A. versions of Windows may show a warning message Interrupt Response (IRQ) indicating that this software is from an unknown The MAX14819A features an integrated active-low interrupt publisher. This is not an error condition and it is safe to indicator pin to actively notify the controller when an interrupt proceed with installation. Administrator privileges are or error condition occurs. Enable interrupts in the by required to install the USB device driver on Windows. setting the bits in the InterruptEn register. 3) Verify that all the jumpers are in their default positions, When an interrupt is triggered, the IRQ bit in the SPI as shown in Table 1. communication is set and the IRQ in the SPI Response 4) Connect the 24V DC power supply on the VCC and box of the GUI turns red. On the EV kit PCB, the IRQ LED GND connectors on the EV kit board. (DS6) also turns on. 5) Connect the multimeter to the V5 testpoint (TP22) 6) Connect the USB cable from the PC to the EV kit Detailed Description of Hardware board. A Windows message appears when connecting The MAX14819 EV kit includes the MAX14819A dual- the EV kit board to the PC for the first time. Each channel IO-Link master transceiver and the external version of Windows has a slightly different message. components for evaluating the device. All logic-level I/Os If you see a Windows message stating ready to use, and IO-Link capable I/Os are available on yellow test then proceed to the next step. points. 7) Start the EV kit software by opening its icon in the Logic-Level Power Supply Windows Start Programs Maxim Integrated menu. The MAX14819A features an internal 5V linear regula- The EV kit software main window appears, as shown in Figure 1. tor which can drive loads up to 20mA. When REGEN is unconnected, this 5V output is available on the V5 test 8) Verify that Status: MAX14819EVKIT A Connected is point (TP22). Leave J13 open and close the J5 jumper displayed on the status bar at the bottom of the main to use this internal 5V regulator to power the logic level window (Figure 1). supply (VL). 9) Turn on the 24V supply. Ensure that the V5 voltage (TP22) is 5V. To use a different logic-level voltage supply, open the J5 jumper and apply the external supply to the VL testpoint 10) Click on the Read All button to read all of the registers (TP23). in the device. 11) Select a register in the register table to access the bits Selecting the Device Address in that register by clicking on the register name. The MAX14819A includes two address pins for SPI addressing, 12) Using the Register Bit Description table that pops up, allowing up to four devices on a single bus. Set the SPI set the individual bits by selecting the required setting address for the MAX14819A on the MAX14819EVKIT by from the drop-down menu for each bit. setting the A1 and A0 jumpers (J11 and J12, respectively). 13) Press the Write Changes button on the GUI to Set the device SPI address in the GUI to the same value by selecting the corresponding address in the drop-down write the registers that have been changed to the MAX14819. menu in the SPI Address box. Using SPI Interface with an External Master Detailed Description of Software Controller Configuring the Registers The MAX14819 EV kit includes an isolated USB-to-SPI Click on a register name in the register table to access interface circuit for communication with the PC/GUI. the individual bits in that register. When the register name To use an external SPI master controller with the is selected in the register table, a corresponding Register MAX14819A, open all of the channels on SW1, and con- Bit Description table appears, allowing access to set nect an the external SPI master to the J20 header. Note individual bits. Click on the drop-down menu next to each that the J20 header is not isolated from the MAX14819A. bit in the Register Bit Description table to select the bit Maxim Integrated 2 www.maximintegrated.com