PXD20RM Datasheet, PDF (290/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

10.5.4 External stop mode
The external Stop Mode is used for MCU power management. The DSPI supports the IPI Green-Line
Interface 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 clocks to the DSPI block may be shut off.
10.5.5 Debug mode
Debug mode is used for system development and debugging. If the device enters debug mode while the
FRZ bit in the DSPIx_MCR is set, the DSPI halts operation on the next frame boundary. If the device enters
debug mode while the FRZ bit is cleared, the DSPI behavior is unaffected and remains dictated by the
module-specific mode and configuration of the DSPI.
For more information, refer to Section 10.9.1.5, Debug Mode.
10.6 Device-specific information
This device implements DSPI 0, DSPI 1, and DSPI 2. The "x" appended to signal names signifies the DSPI
module to which the signal applies. Thus CS0_0 is the CS0 signal that applies to DSPI 0, CS0_1 is the CS0
signal that applies to DSPI 1, and so on.
10.7 External signal description
10.7.1 Signal overview
Table 10-1 lists off-chip DSPI signals.
Table 10-1. Signal properties
Name
I/O Type
Function
Master Mode
Slave Mode
CS0_x
Output / input
Peripheral chip select 0
CS1:2_x
Output
Peripheral chip select 1–2
SIN_x
Input
Serial data in
SOUT_x
Output
Serial data out
SCK_x
Output / input
Serial clock (output)
1 _{The SIU allows you to select alternate pin functions for the device.}
Slave select
Unused¹
Serial data in
Serial data out
Serial clock (input)
10-4
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor