Difference between revisions of "SPI"

Revision as of 11:53, 19 November 2009

Page under construction... Informations on this page are not guaranteed !!

This page will summarize the informations to use the SPI bus on our boards.

SPI (Serial Peripheral Interface) is a 3-wire full-duplex serial bus. Wires used in SPI are :

MOSI, Master Output Slave Input : send data to slave.
MISO, Master Input Slave Output : receive data from slave.
SCLK, : Serial Clock signal used to synchronise the transmission. (In imx27 (apf27) maximum frequency of SCLK is 22.167MHz in master mode and 16.625 in slave mode.
SSx, Slave Select : used to select the slave for communication with master.

On APF27, the i.MX27 contains 3 SPI devices that can be configured in master or slave. APF9328 (i.MXL) contains 2 SPI.

Revision as of 11:05, 18 November 2009 (view source) JulienB (Talk \| contribs) m (Spi moved to SPI: SPI is an acronym -> uppercases) ← Older edit		Revision as of 11:53, 19 November 2009 (view source) JulienB (Talk \| contribs) m (→‎Links) Newer edit →
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	* [http://fr.wikipedia.org/wiki/Serial_Peripheral_Interface SPI description on wikipedia.]		* [http://fr.wikipedia.org/wiki/Serial_Peripheral_Interface SPI description on wikipedia.]
		+	* [http://lxr.linux.no/#linux+v2.6.31/Documentation/spi/ Linux spidev documentation]