Deserial Serial Peripheral Interface (DSPI)
MPC5566 Microcontroller Reference Manual, Rev. 2
20-22 Freescale Semiconductor
The following table describes the fields in the DSPI DMA / interrupt request and enable register:
Table 20-7. DSPIx_RSER Field Descriptions
Field Description
0
TCF_RE
Transmission complete request enable. Enables TCF flag in the DSPIx_SR to generate an interrupt request.
0 TCF interrupt requests are disabled
1 TCF interrupt requests are enabled
1–2 Reserved
3
EOQF_RE
DSPI finished request enable. Enables the EOQF flag in the DSPIx_SR to generate an interrupt request.
0 EOQF interrupt requests are disabled
1 EOQF interrupt requests are enabled
4
TFUF_RE
Transmit FIFO underflow request enable. The TFUF_RE bit enables the TFUF flag in the DSPIx_SR to
generate an interrupt request.
0 TFUF interrupt requests are disabled
1 TFUF interrupt requests are enabled
5 Reserved
6
TFFF_RE
Transmit FIFO fill request enable. Enables the TFFF flag in the DSPIx_SR to generate a request. The
TFFF_DIRS bit selects between generating an interrupt request or a DMA requests.
0 TFFF interrupt requests or DMA requests are disabled
1 TFFF interrupt requests or DMA requests are enabled
7
TFFF_DIRS
Transmit FIFO fill DMA or interrupt request select. Selects between generating a DMA request or an interrupt
request. When the TFFF flag bit in the DSPIx_SR is set, and the TFFF_RE bit in the DSPIx_RSER is set,
this bit selects between generating an interrupt request or a DMA request.
0 Interrupt request is selected
1 DMA request is selected
8–11 Reserved
12
RFOF_RE
Receive FIFO overflow request enable. Enables the RFOF flag in the DSPIx_SR to generate an interrupt
requests.
0 RFOF interrupt requests are disabled
1 RFOF interrupt requests are enabled
13 Reserved
14
RFDF_RE
Receive FIFO drain request enable. Enables the RFDF flag in the DSPIx_SR to generate a request. The
RFDF_DIRS bit selects between generating an interrupt request or a DMA request.
0 RFDF interrupt requests or DMA requests are disabled
1 RFDF interrupt requests or DMA requests are enabled
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