PXN20RM Datasheet, PDF (952/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Deserial – Serial Peripheral Interface (DSPI)
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.
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.
Offset: DSPI_BASE + 0x00C8
Access: Read
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
COMP_DATA
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
COMP_DATA
W
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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.
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.
30-26
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor