Deserial Serial Peripheral Interface (DSPI)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 317
• Classic SPI with CPHA = 0
• Classic SPI with CPHA = 1
• Modified transfer format with CPHA = 0
• Modified transfer format with CPHA = 1
A modified transfer format is supported to allow for high-speed communication with peripherals that
require longer setup times. The DSPI can sample the incoming data later than halfway through the cycle
to give the peripheral more setup time. The MTFE bit in the DSPIx_MCR selects between classic SPI
format and modified transfer format. The classic SPI formats are described in Section 11.8.5.1, Classic SPI
transfer format (CPHA = 0), and Section 11.8.5.2, Classic SPI transfer format (CPHA = 1). The modified
transfer formats are described in Section 11.8.5.3, Modified SPI transfer format (MTFE = 1, CPHA = 0),
and Section 11.8.5.4, Modified SPI transfer format (MTFE = 1, CPHA = 1).
In the SPI configuration, the DSPI provides the option of keeping the CS signals asserted between frames.
Refer to Section 11.8.5.5, Continuous selection format, for details.
To Next Page
Loading...
