PXD10RM Datasheet, PDF (1011/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

30.2.3.6 Debug Mode (SPI Modes only)
The Debug Mode is used for system development and debugging, it is controlled by additional logic
outside of the module. When the MCU is stopped by a debugger and the QSPI_MCR[FRZ] bit is set
QuadSPI stops all serial transfers.
30.3 External signal description
30.3.1 Overview
Table 30-4 lists the signals of the external signals belonging to the QuadSPI module in conjunction with
the different modes of operation.
Table 30-4. Signal Properties
Signal Name
SPI Master Mode
Function & Direction
SPI Slave Mode
PCS0_2
Peripheral
Chip Select 0
Output
Slave Select
Input
PCS2_2,
PCS1_2
Peripheral
Chip Select 1 -
2
Output
Unused
SIN_2
SOUT_2
Serial Data In
Serial Data
Out
Input
Output
Serial Data In
Serial Data
Out
Input
Tristate¹
QSPI_IO2
Unused
Unused
QSPI_IO3
Unused
Unused
SCK_2
Serial Clock
Output
Serial Clock
Input
1 _{Driven only when the module is selected by the SPI master; HiZ otherwise.}
Serial Flash Mode
Peripheral
Chip Select
Output
Unused
Serial I/O 0
Serial I/O 1
Serial I/O 2
Serial I/O 3
Serial Clock
Bidir
Bidir
Bidir
Bidir
Output
Table 30-5 shows how the signals are connected on the PXD10 in SPI and serial flash modes. Serial flash
mode is selected by setting QSPI_MCR[QMODE]. Using a quad flash memory as an SPI device on the
fly (that is, on-the-fly change of mode from SFM to SPI or vice versa) may not be possible for all flash
memories. Check I/O compatibility before using this.
Table 30-5. Connectivity of signals on this device
Chip signal
SPI mode¹
Serial flash mode²
PF[10]
CS_0 (Chip Select)
PCS (Chip Select Out)
PF[11]
CS_1 (Chip Select)
IO2 (Bidir)
PF[12]
CS_2
IO3 (Bidir)
PF[13]
SIN (Serial Data In)
IO0
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
30-7