The Serial Peripheral Interface Bus or SPI (pronounced as either ess-pee-eye or spy) bus is a synchronous serial data link standard, named by Motorola, that operates in full duplex mode. 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. Sometimes SPI is called a four-wire serial bus, contrasting with three-, two-, and one-wire serial buses. SPI is often referred to as SSI (Synchronous Serial Interface).
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Famous quotes containing the words serial, peripheral and/or bus:
“And the serial continues:
Pain, expiation, delight, more pain,
A frieze that lengthens continually, in the lucky way
Friezes do, and no plot is produced,
Nothing you could hang an identifying question on.”
—John Ashbery (b. 1927)
“If we are to change our world view, images have to change. The artist now has a very important job to do. He’s not a little peripheral figure entertaining rich people, he’s really needed.”
—David Hockney (b. 1937)
“David: All the reporters are on the bus.
Lucas: Okay, start the bus then. And drive them over a cliff.”
—Jeremy Larner, U.S. screenwriter, and Michael Ritchie. David (Chris Prey)