AD9920ABBCZ datasheet(50/112 Pages) AD

50 / 112 page

AD9920A

Rev. B | Page 50 of 112

FIELD3

FIELD1

FIELD2

FIELD3

FIELD5

FIELD1

FIELD4

FIELD2

EXAMPLE 1:

TOTAL FIELDS = 3, FIRST FIELD = FIELD1, SECOND FIELD = FIELD2, THIRD FIELD = FIELD3

MODE SETTINGS:

0x2A = 0x03

0x2B = 0x820

0x2C = 0x00

EXAMPLE 2:

TOTAL FIELDS = 1, FIRST FIELD = FIELD3

MODE SETTINGS:

0x2A = 0x01

0x2B = 0x03

0x2C = 0x00

EXAMPLE 3:

TOTAL FIELDS = 4, FIRST FIELD = FIELD5, SECOND FIELD = FIELD1, THIRD FIELD = FIELD4, FOURTH FIELD = FIELD2

MODE SETTINGS:

0x2A = 0x04

0x2B = 0x11025

0x2C = 0x00

Figure 61. Using the Mode Registers to Select Field Timing

MODE FIELD NUMBER

4 (DRAFT)

0 (STILL FIRST FIELD)

EXAMPLE MODE REGISTER CHANGE:

CHANGE FROM DRAFT MODE (FIELD4) TO STILL MODE (FIELD1/2/3).

ALSO WRITE TO VGA GAIN OR ANY NEW REGISTER VALUES NEEDED

FOR STILL FRAME OPERATION, SUCH AS NEW FIELD INFORMATION.

1 (STILL SECOND FIELD)

MODE UPDATE

MODE WRITE

Figure 62. Update of Mode Register, SCK Updated (Default Setting)

MODE FIELD NUMBER

4 (DRAFT)

EXAMPLE MODE REGISTER CHANGE:

CHANGE FROM DRAFT MODE (FIELD4) TO STILL MODE (FIELD1/2/3).

FOR STILL FRAME OPERATION, SUCH AS NEW FIELD INFORMATION.

NOTES

1. NEW MODE INFORMATION IS UPDATED AT SECOND VD FALLING EDGE AFTER

SERIAL WRITE A.

MODE UPDATE

MODE WRITE

0 (STILL FIRST FIELD)

1 (STILL SECOND FIELD)

Figure 63. Update of Mode Register, VD Updated

AD9920ABBCZ датащи(PDF) 50 Page - Analog Devices

AD9920ABBCZ датащи(HTML) 50 Page - Analog Devices

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

датащи скачать

ссылки URL