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SPI/QSPI/I2C LS1043ARDB transfer size, packet fixed size, # of bits transferred?

Question asked by Tracy Smith on Feb 24, 2017
Latest reply on Feb 26, 2017 by Serguei Podiatchev

What is the single size of a single transfer over spi compared to i2c.  Are the packets a fixed size?  If yes, then how many bits are transferred? 

 

Also, is it one packet burst for every time the CSn goes low or can we have multiple bursts of size X when the CSn is asserted?

 

Also, I see on page 62 of LS1043A.pdf that there’s a mention of SPI and QSPI?  Are they separate functions or the same?

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