Freescale Semiconductor MPC5565, Reference Manual

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Deserial Serial Peripheral Interface (DSPI)
MPC5565 Microcontroller Reference Manual, Rev. 1.0
19-32 Freescale Semiconductor
The following table describes the field in the DSPI deserial serial interface transmit comparison register:
19.3.2.14 DSPI DSI Deserialization Data Register (DSPI x _DDR)
The DSPI x _DDR holds the signal states for the parallel output signals. The DSPI x _DDR is read-only and
it is memory mapped so that host software can read the incoming DSI frames.
The following table describes the field in the DSPI deserialization data register:
19.4 Functional Description
The DSPI supports full-duplex, synchronous serial communications between the MCU and peripheral
devices. The DSPI can also be used to reduce the number of pins required for I/O by serializing and
deserializing up to 16 parallel input/output signals from the eTPU and eMIOS. All communications are
through an SPI-like protocol.
Table 19-15. DSPI x _COMPR Field Description
Field Description
0–15 Reserved.
16–31
COMP_
DATA
[0:15]
Compare data. The COMP_DATA field holds the last serialized DSI data.
Address: Base + 0x00CC Access: R/O
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R DESER_DATA
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 19-16. DSPI Deserialization Data Register (DSPI x _DDR)
Table 19-16. DSPI x _DDR Field Description
Field Description
0–15 Reserved.
16–31
DESER
DATA
Deserialized data. Holds deserialized data which is presented as signal states to the parallel output signals.