Changes

SPI (Serial Peripheral Interface Bus) is a synchronous serial data link. Devices communicate in master/slave mode where the master device initiates the data frame. Multiple slave devices are allowed with individual slave select (chip select) lines. It can be faster than I2C protocol and it is usually used in short distances, it uses CMOS level voltage (1V8). Omap have four SPIs: SPI1 supports up to four peripherals, SPI2 and SPI3 support up to two peripherals, and SPI4 supports only one peripheral. Omap SPI is named McSPI (Multichannel Serial Peripheral Interface Bus).Omap McSPI peripheral use five signals:

Omap have four SPIs: SPI1 supports up to four peripherals, SPI2 and SPI3 support up to two peripherals, and SPI4 supports only one peripheral. Omap SPI is named McSPI (Multichannel Serial Peripheral Interface Bus).Omap McSPI peripheral uses five signals:  *McSPI_CSO: Chip Select 0.*McSPI_CS1: Chip Select 1.*McSPI_SOMI: Slave output master input data.*McSPI_SIMO: Slave input master output data.

Omap McSPI have the next caractheristicscharacteristics:

*Supports full duplex data transfer operations, <span lang="en" idclass="result_boxshort_text" classid="short_textresult_box"><span class="hps">simultaneous comunication between master and slave.</span></span>