Information

SPIx_POPR field descriptions
Field Description
31–0
RXDATA
Received Data
Contains the SPI data from the RX FIFO entry to which the Pop Next Data Pointer points.
43.3.10 DSPI Transmit FIFO Registers (SPIx_TXFRn)
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 TXFRx registers does not alter the state of the TX FIFO.
Addresses: SPI0_TXFR0 is 4002_C000h base + 3Ch offset = 4002_C03Ch
SPI0_TXFR1 is 4002_C000h base + 40h offset = 4002_C040h
SPI0_TXFR2 is 4002_C000h base + 44h offset = 4002_C044h
SPI0_TXFR3 is 4002_C000h base + 48h offset = 4002_C048h
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
TXCMD_TXDATA TXDATA
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
SPIx_TXFRn field descriptions
Field Description
31–16
TXCMD_
TXDATA
Transmit Command or Transmit Data
In Master mode the TXCMD field contains the command that sets the transfer attributes for the SPI data.
In Slave mode, this field is reserved.
15–0
TXDATA
Transmit Data
Contains the SPI data to be shifted out.
Memory Map/Register Definition
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
982 Freescale Semiconductor, Inc.