Information

SPIx_CTARn field descriptions (continued)
Field Description
Table 46-40. DSPI baud rate scaler (continued)
CTARn[BR] Baud rate scaler value
1001 512
1010 1024
1011 2048
1100 4096
1101 8192
1110 16384
1111 32768
46.3.4 DSPI Clock and Transfer Attributes Register (In Slave Mode)
(SPIx_CTARn_SLAVE)
When the DSPI is configured as an SPI bus slave, the CTAR0 register is used.
Address: Base address + Ch offset + (4d × i), where i=0d to 0d
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
R
FMSZ
CPOL
CPHA
0 0 0
W
Reset
0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
0
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
SPIx_CTARn_SLAVE field descriptions
Field Description
31–27
FMSZ
Frame Size
The number of bits transfered per frame is equal to the FMSZ field value plus 1. The minimum value of
thisfield is 3.
26
CPOL
Clock Polarity
Table continues on the next page...
Memory Map/Register Definition
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
1198
Preliminary
Freescale Semiconductor, Inc.
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