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EZLINX-IIIDE-EBZ Folha de dados(PDF) 4 Page - Analog Devices |
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EZLINX-IIIDE-EBZ Folha de dados(HTML) 4 Page - Analog Devices |
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4 / 15 page  i Coupler® Isolated Interface Development Environment ezLINX™ Hardware User Guide Rev. PrA | Page 4 of 15 Figure 3. ADM3053 Isolated CAN Implementation ISOLATED RS-485 AND RS-422 The Isolated RS-485 and RS-422 port is implemented using the ADM2587E Signal and Power isolated CAN transceiver. The ADM2587E connects to UART2 of the ADSP-BF548 and is capable of functioning at data rates of up to 500kbit/s. Figure 4 shows a circuit diagram of the implementation of the ADM3053 on the ezLINX hardware. The RS-485 Node can be configured using jumpers JP3, JP4, JP19 and JP40. To configure the node as a half-duplex RS-485 node, connect JP3 and JP4. When JP3 and JP4 are fitted, it will connect A to Y and B to Z. When JP3 and JP4 are removed, the node will be configured as a full duplex RS-485 node or as a RS- 422 node. When JP19 is fitted, the A and B pins will be terminated with 120Ω. If termination is not required, remove JP19. When JP40 is connected a pull-up resistor on the RxD pin of 10kΩ will be connected. Table x show jumper configurations for all the interfaces on ezLINX. The 3.3V supply is connected to VCC(pin 2 and 8) to power the iso Power isolated Power supply and iCoupler signal isolation of the ADM2587E. This generates an isolated 3.3V on the Visoout pin(pin 12) of the ADM2587E and is connected to the Visoin pin(pin 19). A six pin screw terminal connector, J7 is used for easy access to the A(Pin 2), B(Pin 3), Z(Pin 4), Y(Pin 5) and RS- 485_ISO_GND(Pin 1 and 6) connections. Application note AN-960 provides more information on circuit implementation of RS-485 and RS-422 applications. |
Nº de peça semelhante - EZLINX-IIIDE-EBZ |
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Descrição semelhante - EZLINX-IIIDE-EBZ |
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