PXN20RM Datasheet, PDF (948/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Deserial – Serial Peripheral Interface (DSPI)
Offset: DSPI_BASE+
0x003C (DSPI_TXFR0)
0x0040 (DSPI_TXFR1)
0x0044 (DSPI_TXFR2)
0x0048 (DSPI_TXFR3)
Access: Read
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
TXCMD
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
TXDATA
W
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 30-10. DSPI Transmit FIFO Register 0–15 (DSPI_TXFRn)
Table 30-16. DSPI_TXFRn Field Descriptions
Field
Description
TXCMD Transmit Command. The TXCMD field contains the command that sets the transfer attributes for the SPI data. See
Section 30.3.2.6, DSPI PUSH TX FIFO Register (DSPI_PUSHR), for details on the command field.
TXDATA Transmit Data. The TXDATA field contains the SPI data to be shifted out.
30.3.2.9 DSPI Receive FIFO Registers 0–3 (DSPI_RXFRn)
The DSPI_RXFRn registers provide visibility into the RX FIFO for debugging purposes. Each register is
an entry in the RX FIFO. The DSPI_RXFR registers are read-only. Reading the DSPI_RXFRn registers
does not alter the state of the RX FIFO.
30-22
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor