AD9920ABBCZ datasheet(35/112 Pages) AD

35 / 112 page

AD9920A

Rev. B | Page 35 of 112

Table 15. Summary of V-Sequence Registers (see Table 11 and Table 12 for the CLPOB, PBLK, and HBLK Register Summary)

Length

(Bits)

Description

HOLD

Use in conjunction with VMASK_EVEN and VMASK_ODD.

1 = Enable HOLD function instead of FREEZE/RESUME function.

CONCAT_GRP

Combines toggle positions of Group A, Group B, Group C, and Group D when enabled. Only Group A settings

for start, polarity, length, and repetition are used when this mode is selected.

0 = disable.

1 = enable the addition of all toggle positions from VPATSELA/B/C/D.

2 to 15 = test mode only; do not use.

VREP_MODE

Selects line alternation for V-output repetitions. Two separate controls: one for Group A and the other for

Group B, Group C, and Group D.

0 = disable alternation. Group A uses VREPA_1, Groups B/C/D use VREP_EVEN for all lines.

1 = two-line. Group A alternates VREPA_1 and VREPA_2. Groups B/C/D alternate VREP_EVEN and VREP_ODD.

2 = three-line. Group A alternates VREPA_1, VREPA_2, and VREPA_3. Groups B/C/D follow a VREP_EVEN,

VREP_ODD, VREP_ODD, VREP_EVEN, VREP_ODD, VREP_ODD pattern.

3 = four-line. Group A alternates VREPA_1, VREPA_2, VREPA_3, and VREPA_4. Groups B/C/D follow two-line

alternation.

LASTREPLEN_EN

Enable a separate pattern length to be used during the last repetition of the V-sequence. One bit for each

group (A, B, C, and D); Group A is the LSB. Set bit high to enable. Recommended value is enabled.

HDLENE

HD line length for even lines in the V-sequence.

HDLENO

HD line length for

odd lines in the V-sequence.

VPOL

Group A start polarity bits for each XV1 to XV24 signal.

GROUPSEL_0

Assigns each XV1 to XV12 signal to Group A, Group B, Group C, or Group D. Two bits for each signal.

Bits[1:0] are for XV1.

Bits[3:2] are for XV2.

Bits[23:22] are for XV12.

0 = assign to Group A.

1 = assign to Group B.

2 = assign to Group C.

3 = assign to Group D.

GROUPSEL_1

Assigns each XV13 to XV24 signal to Group A, Group B, Group C, or Group D. Two bits for each signal.

Bits[1:0] are for XV13.

Bits[3:2] are for XV14.

Bits[23:22] are for XV24.

0 = assign to Group A.

1 = assign to Group B.

2 = assign to Group C.

3 = assign to Group D.

VPATSELA

Selected V-pattern for Group A.

VPATSELB

Selected V-pattern for Group B.

VPATSELC

Selected V-pattern for Group C.

VPATSELD

Selected V-pattern for Group D.

VSTARTA

Start position for the selected V-pattern Group A.

VSTARTB

Start position for the selected V-pattern Group B.

VSTARTC

Start position for the selected V-pattern Group C.

VSTARTD

Start position for the selected V-pattern Group D.

VLENA

Length of selected V-pattern Group A.

VLENB

Length of selected V-pattern Group B.

VLENC

Length of selected V-pattern Group C.

VLEND

Length of selected V-pattern Group D.

VREPA_1

Number of repetitions for the V-pattern Group A for first lines (even).

VREPA_2

Number of repetitions for the V-pattern Group A for second lines (odd).

VREPA_3

Number of repetitions for the V-pattern Group A for third lines.

VREPA_4

Number of repetitions for the V-pattern Group A for fourth lines.

AD9920ABBCZ Datasheet(PDF) 35 Page - Analog Devices

AD9920ABBCZ Datasheet(HTML) 35 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

Datasheet Download

Link URL