Quad Serial Peripheral Interface (QuadSPI)
MPC5606S Microcontroller Reference Manual, Rev. 7
1058
Freescale Semiconductor
30.6.4
Oak family compatibility with the QuadSPI—SPI modes only
shows the translation of commands written to the TX FIFO command halfword with
commands written to the Command Ram of the Oak family QSPI. The table illustrates how to configure
the QSPI_CTAR registers to match the default cases for the possible combinations of the Oak Family
Control Bits in its Command RAM. The defaults for the Oak Family are based on a system clock of
40MHz. All delay variables below will generate the same delay, or as close a possible, from the QuadSPI
100MHz system clock that an Oak Family part would generate from its 40MHz system clock. For other
system clock frequencies, the customer can recompute the values using Delay settings—SPI modes only.
•
For BITSE = 0
8 bits per transfer
•
For DT = 0
0.425
s delay: For this value, the closest value in the QuadSPI is 0.480
s
•
For DSCK = 0
1/2 SCK period: For this value, the value for the QuadSPI is 20ns
Table 30-48. Delay values
Bus Clock 64 MHz
Bus clock 100 MHz
Delay prescaler values
Delay prescaler values
1
3
5
7
1
3
5
7
Dela
y
sc
aler
v
a
lues
2
31.25 ns
93.75 ns
156.25 ns 218.75 ns
20.0 ns
60.0 ns
100.0 ns
140.0 ns
4
62.5 ns
187.5 ns
312.5 ns
437.5 ns
40.0 ns
120.0 ns
200.0 ns
280.0 ns
8
125 ns
375 ns
625 ns
875 ns
80.0 ns
240.0 ns
400.0 ns
560.0 ns
16
250 ns
750 ns
1.25
s
1.75
s
160.0 ns
480.0 ns
800.0 ns
1.1
s
32
500 ns
1.5
s
2.5
s
3.5
s
320.0 ns
960.0 ns
1.6
s
2.2
s
64
1
s
3
s
5
s
7
s
640.0 ns
1.9
s
3.2
s
4.5
s
128
2
s
6
s
10
s
14
s
1.3
s
3.8
s
6.4
s
9.0
s
256
4
s
12
s
20
s
28
s
2.6
s
7.7
s
12.8
s
17.9
s
512
8
s
24
s
40
s
56
s
5.1
s
15.4
s
25.6
s
35.8
s
1024
16
s
48
s
80
s
112
s
10.2
s
30.7
s
51.2
s
71.7
s
2048
32
s
96
s
160
s
224
s
20.5
s
61.4
s
102.4
s
143.4
s
4096
64
s
192
s
320
s
448
s
41.0
s
122.9
s
204.8
s
286.7
s
8192
128
s
384
s
640
s
896
s
81.9
s
245.8
s
409.6
s
573.4
s
16384
256
s
768
s
1.28 ms
1.8 ms
163.8
s
491.5
s
819.2
s
1.1 ms
32768
512
s
1.5 ms
2.6 ms
3.6 ms
327.7
s
983.0
s
1.6 ms
2.3 ms
65536
1 ms
3.1 ms
5.1 ms
7.2 ms
655.4
s
2.0 ms
3.3 ms
4.6 ms
Содержание MPC5602S
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