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--- resources:eval:ezlinx:isolated-spi [23 Jul 2012 14:58] – Approved Hein Marais
+++ resources:eval:ezlinx:isolated-spi [03 Jan 2021 22:04] (current) – fix links Robin Getz
@@ Line 4: / Line 4: @@
 ====== ezLINX™ Isolated SPI Implementation======
-Two Isolated SPI ports are implemented using the [[http://www.analog.com/adum3401|ADuM3401]] and the [[http://www.analog.com/adum3402|ADuM3402]] //i//Coupler signal isolators and the [[http://www.analog.com/adum5000|ADuM5000]] //iso//Power Isolated DC to DC converter. The [[http://www.analog.com/adum3401|ADuM3401]] of the isolated SPI1 is connected to SPI0 of the ADSP-BF548. The [[http://www.analog.com/adum3402|ADuM3402]] is used for isolating the SPI slave select lines. Figure 1 below shows a circuit diagram of the implementation of Isolated SPI1 using the [[http://www.analog.com/adum3401|ADuM3401]], [[http://www.analog.com/adum3402|ADuM3402]], and [[http://www.analog.com/adum5000|ADuM5000]] on the //ez//LINX hardware.
+Two Isolated SPI ports are implemented using the [[adi>adum3401|ADuM3401]] and the [[adi>adum3402|ADuM3402]] //i//Coupler signal isolators and the [[adi>adum5000|ADuM5000]] //iso//Power Isolated DC to DC converter. The [[adi>adum3401|ADuM3401]] of the isolated SPI1 is connected to SPI0 of the ADSP-BF548. The [[adi>adum3402|ADuM3402]] is used for isolating the SPI slave select lines. Figure 1 below shows a circuit diagram of the implementation of Isolated SPI1 using the [[adi>adum3401|ADuM3401]], [[adi>adum3402|ADuM3402]], and [[adi>adum5000|ADuM5000]] on the //ez//LINX hardware.
 {{ :ezlinx:isolatedspi1.png?nolink&900 |Figure 1. Isolated SPI1 schematic}}
-To connect Isolated SPI1 as a master, connect jumpers JP5, JP7, JP9, JP11, JP13, JP15, JP21 and JP36 while leaving jumpers JP6, JP8, JP10, JP12, JP14, JP16, JP20 and JP37 open. To connect Isolated SPI1 as a slave, connect jumpers JP6, JP8, JP10, JP12, JP14, JP16, JP20 and JP37 while leaving jumpers JP5, JP7, JP9, JP11, JP13, JP15, JP21 and JP36 open. When connecting SPI1 as a slave, connecting JP20 enables the slave select and serial clock inputs on the [[http://www.analog.com/adum3402|ADuM3402]].
+To connect Isolated SPI1 as a master, connect jumpers JP5, JP7, JP9, JP11, JP13, JP15, JP21 and JP36 while leaving jumpers JP6, JP8, JP10, JP12, JP14, JP16, JP20 and JP37 open. To connect Isolated SPI1 as a slave, connect jumpers JP6, JP8, JP10, JP12, JP14, JP16, JP20 and JP37 while leaving jumpers JP5, JP7, JP9, JP11, JP13, JP15, JP21 and JP36 open. When connecting SPI1 as a slave, connecting JP20 enables the slave select and serial clock inputs on the [[adi>adum3402|ADuM3402]].
 These jumper settings are given in the table below:
@@ Line 19: / Line 19: @@
-The [[http://www.analog.com/adum3401|ADuM3401]] of the isolated SPI2 is connected to SPI2 of the ADSP-BF548. The [[http://www.analog.com/adum3402|ADuM3402]] is used for isolating the SPI slave select lines. Figure 2 below shows a circuit diagram of the implementation of Isolated SPI2 using the [[http://www.analog.com/adum3401|ADuM3401]], [[http://www.analog.com/adum3402|ADuM3402]] and [[http://www.analog.com/adum5000|ADuM5000]] on the //ez//LINX hardware.
+The [[adi>adum3401|ADuM3401]] of the isolated SPI2 is connected to SPI2 of the ADSP-BF548. The [[adi>adum3402|ADuM3402]] is used for isolating the SPI slave select lines. Figure 2 below shows a circuit diagram of the implementation of Isolated SPI2 using the [[adi>adum3401|ADuM3401]], [[adi>adum3402|ADuM3402]] and [[adi>adum5000|ADuM5000]] on the //ez//LINX hardware.
 {{ :ezlinx:isolatedspi2.png?nolink&900 |Figure 2. Isolated SPI2 schematic}}
-To connect Isolated SPI2 as a master, connect jumpers JP22, JP24, JP26, JP28, JP30, JP32, JP35 and JP38 while leaving jumpers JP23, JP25, JP27, JP29, JP31, JP33, JP34 and JP39 open. To connect Isolated SPI2 as a slave, connect jumpers JP23, JP25, JP27, JP29, JP31, JP33, JP34 and JP39 while leaving jumpers JP22, JP24, JP26, JP28, JP30, JP32, JP35 and JP38 open. When connecting SPI2 as a slave JP34 should also be connected, enabling the slave select and serial clock inputs on the [[http://www.analog.com/adum3402|ADuM3402]].
+To connect Isolated SPI2 as a master, connect jumpers JP22, JP24, JP26, JP28, JP30, JP32, JP35 and JP38 while leaving jumpers JP23, JP25, JP27, JP29, JP31, JP33, JP34 and JP39 open. To connect Isolated SPI2 as a slave, connect jumpers JP23, JP25, JP27, JP29, JP31, JP33, JP34 and JP39 while leaving jumpers JP22, JP24, JP26, JP28, JP30, JP32, JP35 and JP38 open. When connecting SPI2 as a slave JP34 should also be connected, enabling the slave select and serial clock inputs on the [[adi>adum3402|ADuM3402]].
@@ Line 34: / Line 34: @@
 \\
-VDD1 of the [[http://www.analog.com/adum3401|ADuM3401]], [[http://www.analog.com/adum3402|ADuM3402]] and VDD1 of the [[http://www.analog.com/adum5000|ADuM5000]] are powered by 3.3V. The [[http://www.analog.com/adum5000|ADuM5000]] will generate an isolated 3.3V and is used to supply power to VDD2 of the [[http://www.analog.com/adum3401|ADuM3401]] and [[http://www.analog.com/adum3402|ADuM3402]].
+VDD1 of the [[adi>adum3401|ADuM3401]], [[adi>adum3402|ADuM3402]] and VDD1 of the [[adi>adum5000|ADuM5000]] are powered by 3.3V. The [[adi>adum5000|ADuM5000]] will generate an isolated 3.3V and is used to supply power to VDD2 of the [[adi>adum3401|ADuM3401]] and [[adi>adum3402|ADuM3402]].
 Two seven pin screw terminal connectors, J10 and J25 are used for easy access to the SPISCK (Pin 1), SPIMOSI (Pin 2), SPISEL1/SPISS (Pin 3), SPIMISO (Pin 4). SPISEL2 (Pin 5), SPISEL3 (Pin 6) and SPI_ISO_GND (Pin 7).

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