Deserial Serial Peripheral Interface (DSPI)
MPC5565 Microcontroller Reference Manual, Rev. 1.0
19-68
Freescale Semiconductor
19.5.3
Delay Settings
shows the values for the delay after transfer (t
DT
) and CS to SCK delay (t
CSC
) that can be
generated based on the prescaler values and the scaler values set in the DSPI
x
_CTARs. The values
calculated assume a 100 MHz system frequency.
19.5.4
MPC5xx QSPI Compatibility with the DSPI
shows the translation of commands written to the TX FIFO command halfword with
commands written to the command RAM of the MPC5xx family QSPI. The table illustrates how to
configure the DSPI
x
_CTARs to match the default cases for the possible combinations of the MPC5xx
family control bits in its command RAM. The defaults for the MPC5xx family are based on a system clock
of 40 MHz.
Table 19-31. Delay Values
Delay Prescaler Values
(DSPI_CTAR[PBR])
1
3
5
7
D
e
la
y Scaler V
a
lue
s
(DSPI_C
T
AR[DT])
2
20.0 ns
60.0 ns
100.0 ns
140.0 ns
4
40.0 ns
120.0 ns
200.0 ns
280.0 ns
8
80.0 ns
240.0 ns
400.0 ns
560.0 ns
16
160.0 ns
480.0 ns
800.0 ns
1.1
μ
s
32
320.0 ns
960.0 ns
1.6
μ
s
2.2
μ
s
64
640.0 ns
1.9
μ
s
3.2
μ
s
4.5
μ
s
128
1.3
μ
s
3.8
μ
s
6.4
μ
s
9.0
μ
s
256
2.6
μ
s
7.7
μ
s
12.8
μ
s
17.9
μ
s
512
5.1
μ
s
15.4
μ
s
25.6
μ
s
35.8
μ
s
1024
10.2
μ
s
30.7
μ
s
51.2
μ
s
71.7
μ
s
2048
20.5
μ
s
61.4
μ
s
102.4
μ
s
143.4
μ
s
4096
41.0
μ
s
122.9
μ
s
204.8
μ
s
286.7
μ
s
8192
81.9
μ
s
245.8
μ
s
409.6
μ
s
573.4
μ
s
16384
163.8
μ
s
491.5
μ
s
819.2
μ
s
1.1 ms
32768
327.7
μ
s
983.0
μ
s
1.6 ms
2.3 ms
65536
655.4
μ
s
2.0 ms
3.3 ms
4.6 ms
Содержание MPC5565
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Страница 515: ...External Bus Interface EBI MPC5565 Microcontroller Reference Manual Rev 1 0 12 70 Freescale Semiconductor...
Страница 553: ...Flash Memory MPC5565 Microcontroller Reference Manual Rev 1 0 13 38 Freescale Semiconductor...
Страница 559: ...SRAM MPC5565 Microcontroller Reference Manual Rev 1 0 14 6 Freescale Semiconductor...
Страница 577: ...Boot Assist Module BAM MPC5565 Microcontroller Reference Manual Rev 1 0 15 18 Freescale Semiconductor...
Страница 895: ...Deserial Serial Peripheral Interface DSPI MPC5565 Microcontroller Reference Manual Rev 1 0 19 72 Freescale Semiconductor...
Страница 973: ...Preface MPC5565 Microcontroller Reference Manual Rev 1 0 21 36 Freescale Semiconductor...
Страница 1145: ...MPC5565 Register Map MPC5565 Microcontroller Reference Manual Rev 1 0 A 60 Freescale Semiconductor...
Страница 1153: ...Calibration MPC5565 Microcontroller Reference Manual Rev 1 0 B 8 Freescale Semiconductor...