PXD20RM Datasheet, PDF (1217/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

• ADDRESS: Serial Flash Address is sent to the device. All IOFx signals are driven. Note that this
phase is not applicable for all SFM Commands.
• MODE: Mode bytes are sent to the serial flash device. All IOFx signals are driven. Note that this
phase is not applicable for all SFM Commands.
• DUMMY: Dummy clocks are provided to the serial flash device. Refer to Figure 35-2 for the IOFx
signals driven. The actual data lines required for the SFM Command executed are not driven for
data read commands. Note that this phase is not applicable for all SFM Commands.
• DATA: Serial flash data are sent to or received from the serial flash device. Refer to Figure 35-2
for the IOFx signals driven. The actual data lines required for the SFM Command executed are not
driven for data read commands. Note that this phase is not applicable for all SFM Commands.
The PCSFx and SCKFx signals are driven permanently throughout all the phases.
In Individual Flash Mode this applies to the selected flash device. In Parallel Flash Mode this applies to
both serial flash devices simultaneously.
35.3 Interrupt Signals
The interrupt request lines of the QuadSPI module are mapped to the internal flags according to Table 35-2
below:
Table 35-2. Assignment of interrupt request lines
IRQ/DMA line
QSPI_SFMFR
flag
Interrupt description
ipi_int_tfff
ipi_int_tcf
ipi_int_rfdf
TBFF
TFF
RBDF
ipi_int_overrun ^RBOF
TBUF
ABOF
TX Buffer Fill
IP Command Transaction Finished
RX Buffer Drain
Buffer Overflow/Underrun Error
Logical OR from:
RX Buffer Overrun
TX Buffer Underrun
AHB Buffer Overflow
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
35-7