PXD10RM Datasheet, PDF (305/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

Table 11-15 describes the fields in the DSPI pop receive FIFO register.
Table 11-15. DSPIx_POPR Field Descriptions
Field
Description
0–15 Reserved, must be cleared.
16–31 Received data. The RXDATA field contains the SPI data from the RX FIFO entry pointed to by the pop
RXDATA next data pointer (POPNXTPTR).
[0:15]
11.7.2.8 DSPI Transmit FIFO Registers 0–4 (DSPIx_TXFRn)
The DSPIx_TXFRn registers provide visibility into the TX FIFO for debugging purposes. Each register is
an entry in the TX FIFO. The registers are read-only and cannot be modified. Reading the DSPIx_TXFRn
registers does not alter the state of the TX FIFO. The MCU uses four registers to implement the TX FIFO,
that is DSPIx_TXFR0–DSPIx_TXFR3 are used.
Address:
Base + 0x003C (DSPIx_TXFR0)
Base + 0x0040 (DSPIx_TXFR1)
Base + 0x0044 (DSPIx_TXFR2)
Base + 0x0048 (DSPIx_TXFR3)
Base + 0x004C (DSPIx_TXFR4)
Access: R/O
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 11-9. DSPI Transmit FIFO Register 0–4 (DSPIx_TXFRn)
Table 11-16 describes the fields in the DSPI transmit FIFO register.
Table 11-16. DSPIx_TXFRn Field Descriptions
Field
Description
0–15 Transmit command. Contains the command that sets the transfer attributes for the SPI data. Refer to
TXCMD Section 11.7.2.6, DSPI PUSH TX FIFO Register (DSPIx_PUSHR), for details on the command field.
[0:15]
16–31 Transmit data. Contains the SPI data to be shifted out.
TXDATA
[0:15]
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
11-23