MAX14883EEVKIT#

Click here for production status of specific part numbers. Evaluates: MAX14883E MAX14883E Evaluation Kit Startup Procedure General Description The MAX14883E EV kit is fully assembled and tested. The MAX14883E evaluation kit (EV kit) is a fully assembled Follow the steps below to verify board operation. and tested PCB that demonstrates the functionality of the MAX14883E fault-protected controller area network 1) Set the power supply to 5V and connect the pow- (CAN) transceiver. The EV kit operates from a 5V supply. er supply to the V test point (TP9). Connect the DD ground terminal of the power supply to the GND test Features point (TP8). Operates from a Single 5V Supply 2) Ensure that all jumpers are in their default positions Terminal Block Connectors for Easy CAN System (see Table 1). Evaluation 3) Turn on the power supply. Fully Assembled and Tested 4) Set the signal/function generator to output a 500kHz 0V-to-5V square wave. Quick Start 5) Connect the signal/function generator to the TXD test Required Equipment point (TP1). MAX14883E EV Kit 6) Connect two oscilloscope probes to TXD (TP1) and 5V, 500mA DC power supply RXD (TP3), respectively, to verify that the signal on RXD is the same as on TXD. Signal/function generator 7) To view the CANH and CANL signals, connect the Oscilloscope scope probes to the CANH test point (TP15) and the CANL test point (TP14). Ordering Information appears at end of data sheet. 19-8803 Rev 2 12/18Evaluates: MAX14883E MAX14883E Evaluation Kit 60 load on the CAN driver. The MAX14883E EV kit fea- Detailed Description of Hardware tures a selectable split 60-60-47nF termination cirucit The MAX14883E EV kit is a fully assembled and tested beween the CANH and CANL driver outputs. If the board circuit board for evaluating the MAX14883E fault-protected is being evaluated in a system and is connected at the CAN transceiver (U3). The EV kit has been designed to end of the cable, close the J3 jumper and the J2 jumper allow for evaluating the MAX14883E alone or in a CAN to enable this termination. If the board is connected to a system. bus that is terminated elsewhere, open J3 and J2 to avoid Powering the Board loading the bus down further. Connect a 5V supply to the external supply to the V To evaluate performance with a non-split termination DD test point (TP9) to power the MAX14883E transceiver. (resistive termination only between CANH and CANL), The ground terminal of the 5V supply must be connected. open the J2 jumper to disconnect the C3 capacitor from ground. On-Board Termination The termination resistors on the MAX14883E EV should A properly terminated CAN bus is terminated at each end be changed to 30-30-47nF (a 60 load, total) to simulate with the characteristic impedance of the cable. For cat5 a complete system load during evaluation. or cat6 tables, this is typically 120 on each end for a Table 1. Jumper Table (J1-J7) JUMPER SHUNT POSITION DESCRIPTION Open V is not connected to V . Apply an external voltage to V . L DD L J1 Closed* V is connected to V . L DD Open Split termination capacitor is not connected. J2 Closed* Split termination capacitor is connected. Open CANH and CANL are not connected through the on-board resistor termination network. J3 Closed* CANH and CANL are connected through the on-board resistor termination network. Open External diode protection is not connected to CANH. J6 Closed* External diode protection is connected to CANH. Open External diode protection is not connected to CANL. J7 Closed* External diode protection is connected to CANL. 12 POL is connected to V . L J8 23* POL is connected to GND. 12 TXD is connected to V . L J9 23* TXD is connected to GND. *Default position. Maxim Integrated 2 www.maximintegrated.com