Continuous Selection Format - NXP Semiconductors freescale KV4 Series Reference Manual

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Figure 44-36. DSPI Modified Transfer Format (MTFE=1, CPHA=1, f

44.5.4.5 Continuous Selection Format

Some peripherals must be deselected between every transfer. Other peripherals must

remain selected between several sequential serial transfers. The Continuous Selection

Format provides the flexibility to handle the following case. The Continuous Selection

Format is enabled for the SPI configuration by setting the CONT bit in the SPI command.

When the CONT bit = 0, the module drives the asserted Chip Select signals to their idle

states in between frames. The idle states of the Chip Select signals are selected by the

PCSISn bits in the MCR. The following timing diagram is for two four-bit transfers with

CPHA = 1 and CONT = 0.

Freescale Semiconductor, Inc.

DSPI samples SIN

Slave samoles SOUD

KV4x Reference Manual, Rev. 2, 02/2015

Chapter 44 Serial Peripheral Interface (SPI)