Timeline for SPI Isolation with Open Drain MISO
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 12, 2016 at 21:49 | answer | added | bigjosh | timeline score: 5 | |
| Jan 12, 2016 at 21:42 | answer | added | Ignacio Vazquez-Abrams | timeline score: 1 | |
| Jan 12, 2016 at 21:39 | comment | added | bigjosh | Which diodes are you asking about? D1A/D1B? Or D2A/D2B? | |
| Jan 12, 2016 at 19:49 | comment | added | TheFullMonteCarlo | Thanks, Nick. Yes, I understand that SPI is just sort of do what works given your situation sort of standard. For my question, I don't think the fact that it is SPI is even relevant really. It could just be a generic open drain output through an isolator to a uC. Either way the Slave part is the Linear Tech LTC6804-2 and here is an SiLabs document relating to I2C discussing using a schottky to turn its push-pulls to open drains. silabs.com/Support%20Documents/TechnicalDocs/an352.pdf | |
| Jan 12, 2016 at 19:41 | comment | added | Nick Alexeev | Could you post a link to the page that describes the Schottky diode approach? Could you post the part number of your slave device? Useful that it is, the SPI is more like a tradition than a standard: there is no single specification (unlike, say, I2C). For example, open drain MISO is not a part of the "core" SPI tradition. As a result, compatibility of each component on the SPI bus has to be examined. Which is what you're doing. | |
| Jan 12, 2016 at 19:28 | review | First posts | |||
| Jan 12, 2016 at 20:13 | |||||
| Jan 12, 2016 at 19:23 | history | asked | TheFullMonteCarlo | CC BY-SA 3.0 |