K60P100M100SF2RM Datasheet, PDF (1393/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

• External stop mode
• Debug mode
Chapter 49 SPI (DSPI)
The DSPI enters module-specific modes when the host writes a DSPI register. The MCU-
specific modes are controlled by signals, external to the DSPI. The MCU-specific modes
are modes that an MCU may enter in parallel to the DSPI block-specific modes.
49.1.4.1 Master Mode
Master mode allows the DSPI to initiate and control serial communication. In this mode,
the SCK signal and the PCS[x] signals are controlled by the DSPI and configured as
outputs.
49.1.4.2 Slave Mode
Slave mode allows the DSPI to communicate with SPI bus masters. In this mode, the
DSPI responds to externally controlled serial transfers. The SCK signal and the PCS[0]/
SS signals are configured as inputs and driven by a SPI bus master.
49.1.4.3 Module Disable Mode
The module disable mode can be used for MCU power management. The clock to the
non-memory mapped logic in the DSPI can be stopped while in the module disable mode.
49.1.4.4 External Stop Mode
External stop mode is used for MCU power management. The DSPI supports the
Peripheral Bus stop mode mechanism. When a request is made to enter external stop
mode, the DSPI block acknowledges the request and completes the transfer in progress.
When the DSPI reaches the frame boundary it signals that the system clock to the DSPI
module may be shut off.
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
1393