Freescale Semiconductor MCF54455 Reference Manual page 766

Field
11–8 After SCK delay scaler. Selects the scaler value for the after SCK delay. This field is only used in master mode. The
ASC after SCK delay is the delay between the last edge of DSPI_SCK and the negation of DSPI_PCS. The table below
lists the scaler values.
Note: See Section 31.4.3.3, "After SCK Delay
7–4
Delay after transfer scaler. The DT field selects the delay after transfer scaler. This field is only used in master mode.
DT The delay after transfer is the time between the negation of the DSPI_PCS signal at the end of a frame and the
assertion of DSPI_PCS at the beginning of the next frame. The table below lists the scaler values.
Note: See Section 31.4.3.4, "Delay after Transfer
Freescale Semiconductor
Table 31-5. DSPI_CTARn Field Description (continued)
After SCK Delay
ASC
Scaler Value
0000 2
0001 4
0010 8
0011 16
0100 32
0101 64
0110 128
0111 256
(tASC)," for more details on calculating the after SCK delay.
Delay after Transfer
DT
Scaler Value
0000 2
0001 4
0010 8
0011 16
0100 32
0101 64
0110 128
0111 256
DMA Serial Peripheral Interface (DSPI)
Description
After SCK Delay
ASC
1000
1001
1010
1011
1100
1101
1110
1111
DT Transfer Scaler
1000
1001
1010
1011
1100
1101
1110
1111
(tDT)," for more details on calculating the delay after transfer.
Scaler Value
512
1024
2048
4096
8192
16384
32768
65536
Delay after
Value
512
1024
2048
4096
8192
16384
32768
65536
31-13