MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
20-62
Freescale Semiconductor
Figure 20-43. Continuous SCK Timing Diagram (CONT=0)
If the CONT bit in the TX FIFO entry is set or the DCONT in the DSPI
x
_DSICR is set, PCS remains
asserted between the transfers when the PCS signal for the next transfer is the same as for the current
transfer.
shows timing diagram for continuous SCK format with continuous selection
enabled.
Figure 20-44. Continuous SCK Timing Diagram (CONT=1)
20.4.9
Interrupts/DMA Requests
The DSPI has five conditions which can only generate interrupt requests and two conditions that can
generate interrupt or DMA request.
Table 20-30. Interrupt and DMA Request Conditions
Condition
Flag
Interrupt
DMA
End of transfer queue has been reached (EOQ)
EOQF
X
TX FIFO is not full
TFFF
X
X
Current frame transfer is complete
TCF
X
TX FIFO underflow has occurred
TFUF
X
RX FIFO is not empty
RFDF
X
X
RX FIFO overflow has occurred
RFOF
X
A FIFO overrun has occurred
1
TFUF OR RFOF
X
SCK
(CPOL = 0)
PCS
SCK
(CPOL = 1)
Master SOUT
t
DT
t
DT
= 1 SCK.
Master SIN
SCK
(CPOL = 0)
PCS
SCK
(CPOL = 1)
Master SOUT
Master SIN
Transfer 1
Transfer 2
Summary of Contents for MPC5553
Page 5: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 2 Freescale Semiconductor...
Page 21: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 xvi Freescale Semiconductor...
Page 47: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 1 26 Freescale Semiconductor...
Page 163: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 4 20 Freescale Semiconductor...
Page 179: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 5 16 Freescale Semiconductor...
Page 561: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 13 38 Freescale Semiconductor...
Page 615: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 14 54 Freescale Semiconductor...
Page 707: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 17 68 Freescale Semiconductor...
Page 755: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 18 48 Freescale Semiconductor...
Page 873: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 19 118 Freescale Semiconductor...
Page 984: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 Freescale Semiconductor 21 41...
Page 985: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 21 42 Freescale Semiconductor...
Page 1019: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 22 34 Freescale Semiconductor...
Page 1129: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 25 90 Freescale Semiconductor...