MAC7200 datasheet(698/976 Pages) FREESCALE

698 / 976 page

Initialization/Application Information

MAC7200 Microcontroller Family Reference Manual, Rev. 2

620

Freescale Semiconductor

30.13.4 Oak Family Compatibility with the DSPI

Table 30-33 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 DSPI_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 DSPI

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.

•

For BITSE = 0

→ 8 bits per transfer

•

For DT = 0

→ 0.425μs delay: For this value, the closest value in the DSPI is 0.480μs

•

For DSCK = 0

→ 1/2 SCK period: For this value, the value for the DSPI is 20ns

Table 30-32. Delay Values

Delay Prescaler Values

1357

20.0 ns

60.0 ns

100.0 ns

140.0 ns

40.0 ns

120.0 ns

200.0 ns

280.0 ns

80.0 ns

240.0 ns

400.0 ns

560.0 ns

160.0 ns

480.0 ns

800.0 ns

1.1

μs

320.0 ns

960.0 ns

1.6

μs2.2 μs

640.0 ns

1.9

μs3.2 μs4.5 μs

128

1.3

μs3.8 μs6.4 μs9.0 μs

256

2.6

μs7.7 μs

12.8

μs

17.9

μs

512

5.1

μs

15.4

μs

25.6

μs

35.8

μs

1024

10.2

μs

30.7

μs

51.2

μs

71.7

μs

2048

20.5

μs

61.4

μs

102.4

μs

143.4

μs

4096

41.0

μs

122.9

μs

204.8

μs

286.7

μs

8192

81.9

μs

245.8

μs

409.6

μs

573.4

μs

16384

163.8

μs

491.5

μs

819.2

μs

1.1 ms

32768

327.7

μs

983.0

μs

1.6 ms

2.3 ms

65536

655.4

μs

2.0 ms

3.3 ms

4.6 ms

MAC7200 Datasheet(PDF) 698 Page - Freescale Semiconductor, Inc

MAC7200 Datasheet(HTML) 698 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL