NXP Semiconductors PXN2020 - 30.3.2.13 DSPI DSI Transmit Comparison Register (DSPI_COMPR); 30.3.2.14 DSPI DSI Deserialization Data Register (DSPI_DDR)

Deserial – Serial Peripheral Interface (DSPI)
PXN20 Microcontroller Reference Manual, Rev. 1
30-26 Freescale Semiconductor
30.3.2.13 DSPI DSI Transmit Comparison Register (DSPI_COMPR)
The DSPI_COMPR holds a copy of the last transmitted DSI data. The DSPI_COMPR is read-only. DSI
data is transferred to this register as it is loaded into the TX Shift Register.
The DSPI_COMPR is a 32-bit register. The upper 16 bits are only used when TSB is enabled. For non-TSB
configurations only the least 16 significant bits are used.
30.3.2.14 DSPI DSI Deserialization Data Register (DSPI_DDR)
The DSPI_DDR register holds the signal states for the parallel output signals. The DSPI_DDR is read-only
and it is memory mapped so that host software can read the incoming DSI frames.
Table 30-20. DSPI_ASDR Field Description
Field Description
ASER_DATA Alternate Serialized Data. The ASER_DATA field holds the alternate data to be serialized.
Offset: DSPI_BASE + 0x00C8 Access: Read
0123456789101112131415
RCOMP_DATA
W
Reset0000000000000000
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
RCOMP_DATA
W
Reset0000000000000000
Figure 30-15. DSPI DSI Transmit Comparison Register (DSPI_COMPR)
Table 30-21. DSPI_COMPR Field Description
Field Description
COMP_DATA Compare Data. The COMP_DATA field holds the last serialized DSI data.