K60P100M100SF2RM Datasheet, PDF (1412/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Memory Map/Register Definition
SPIx_RSER field descriptions (continued)
Field
26
Reserved
25
TFFF_RE
Description
This read-only field is reserved and always has the value zero.
Transmit FIFO Fill Request Enable
Enables the TFFF flag in the SR to generate a request. The TFFF_DIRS bit selects between generating
an interrupt request or a DMA request.
24
TFFF_DIRS
0 TFFF interrupts or DMA requests are disabled.
1 TFFF interrupts or DMA requests are enabled.
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 SR is
set and the TFFF_RE bit in the RSER register is set, this bit selects between generating an interrupt
request or a DMA request.
23
Reserved
22
Reserved
21
Reserved
20
Reserved
19
RFOF_RE
0 TFFF flag generates interrupt requests.
1 TFFF flag generates DMA requests.
This read-only field is reserved and always has the value zero.
This read-only field is reserved and always has the value zero.
This read-only field is reserved and always has the value zero.
This read-only field is reserved and always has the value zero.
Receive FIFO Overflow Request Enable
Enables the RFOF flag in the SR to generate an interrupt request.
18
Reserved
17
RFDF_RE
0 RFOF interrupt requests are disabled.
1 RFOF interrupt requests are enabled.
This read-only field is reserved and always has the value zero.
Receive FIFO Drain Request Enable
Enables the RFDF flag in the SR to generate a request. The RFDF_DIRS bit selects between generating
an interrupt request or a DMA request.
16
RFDF_DIRS
0 RFDF interrupt or DMA requests are disabled
1 RFDF interrupt or DMA requests are enabled
Receive FIFO Drain DMA or Interrupt Request Select.
Selects between generating a DMA request or an interrupt request. When the RFDF flag bit in the SR is
set, and the RFDF_RE bit in the RSER is set, the RFDF_DIRS bit selects between generating an interrupt
request or a DMA request.
0 Interrupt request.
1 DMA request.
Table continues on the next page...
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K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.