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Chapter 26 Deserial Serial Peripheral Interface (DSPI)
MPC5606BK Microcontroller Reference Manual, Rev. 2
596
Freescale Semiconductor
26.3.4
Debug mode
Debug mode is used for system development and debugging. If the device enters debug mode while the
FRZ bit in the DSPI
x
_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.
26.4
External signal description
26.4.1
Signal overview
lists off-chip DSPI signals.
26.4.2
Signal names and descriptions
26.4.2.1
Peripheral Chip Select / Slave Select (CS0_x
)
In master mode, the CS0_x signal is a peripheral chip select output that selects the slave device to which
the current transmission is intended.
In slave mode, the CS0_x signal is a slave select input signal that allows an SPI master to select the DSPI
as the target for transmission. CS0_x must be configured as input and pulled high. If the internal pullup is
being used then the appropriate bits in the relevant SIU_PCR must be set (SIU_PCR [WPE = 1],
[WPS = 1]).
Set the IBE and OBE bits in the SIU_PCR for all CS0_x pins when the DSPI chip select or slave select
primary function is selected for that pin. When the pin is used for DSPI master mode as a chip select output,
set the OBE bit. When the pin is used in DSPI slave mode as a slave select input, set the IBE bit.
Table 26-1. Signal properties
Name
I/O type
Function
Master mode
Slave mode
CS0_
x
Output / input
Peripheral chip select 0
Slave select
CS1:3_x
Output
Peripheral chip select 1–3
Unused
1
1
The SIUL allows you to select alternate pin functions for the device.
CS4_x
Output
Peripheral chip select 4
Master trigger
CS5_x
Output
Peripheral chip select 5 /
Peripheral chip select strobe
Unused
SIN_x
Input
Serial data in
Serial data in
SOUT_x
Output
Serial data out
Serial data out
SCK_x
Output / input
Serial clock (output)
Serial clock (input)
Summary of Contents for MPC5605BK
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Page 20: ...MPC5606BK Microcontroller Reference Manual Rev 2 20 Freescale Semiconductor...
Page 103: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 103 Clocks and power...
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Page 943: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 943 Debug...