I am trying to establish SPI connection between C8051F931 and SD card. One of the sample programs I have found contains the following comments.
// P0.0 - SPI SCK (digital output, push-pull) // P0.1 - SPI MISO (digital input, open-drain) // P0.2 - SPI MOSI (digital output, push-pull) // P0.3 - SPI NSS (digital output, push-pull)
Do I have to connect some resistance in both the case (push-pull,open-drain) ? if yes what values?