Datasheet

AD9923A
Rev. A | Page 19 of 84
Table 12. CLPOB and PBLK Pattern Registers
Register Length (Bits) Range Description
CLPOBPOL 1 High/low Starting polarity of CLPOB for each V-sequence
PBLKPOL 1 High/low Starting polarity of PBLK for each V-sequence
CLPOBTOG1 13 0 to 8191 pixel location First CLPOB toggle position within the line for each V-sequence
CLPOBTOG2 13 0 to 8191 pixel location Second CLPOB toggle position within the line for each V-sequence
PBLKTOG1 13 0 to 8191 pixel location First PBLK toggle position within the line for each V-sequence
PBLKBTOG2 13 0 to 8191 pixel location Second PBLK toggle position within the line for each V-sequence
CLPMASKSTART 12 0 to 4095 line location CLPOB masking area—starting line within the field (maximum of three areas)
CLPMASKEND 12 0 to 4095 line location CLPOB masking area—ending line within the field (maximum of three areas)
PBLKMASKSTART 12 0 to 4095 line location PBLK masking area—starting line within the field (maximum of three areas)
PBLKMASKEND 12 0 to 4095 line location PBLK masking area—ending line within the field (maximum of three areas)
32
1
HD
CLPOB
PBLK
PROGRAMMABLE SETTINGS:
1
START POLARITY (CLAMP AND BLANK REGIONS ARE ACTIVE LOW).
2
FIRST TOGGLE POSITION.
3
SECOND TOGGLE POSITION.
ACTIVE
ACTIVE
05586-022
Figure 23. Clamp and Preblank Pulse Placement
NO CLPOB SIGNAL
FOR LINE 600
VD
HD
NO CLPOB SIGNAL
FOR LINES 6 TO 8
CLPMASKSTART1 = 6 CLPMASKEND1 = 8
0 1 2 597 598
CLPMASKSTART2 = CLPMASKEND2 = 600
C
LPOB
05586-023
Figure 24. CLPOB Masking Example
NO PBLK SIGNAL
FOR LINE 703
VD
HD
NO PBLK SIGNAL
FOR LINES 6 TO 8
PBLKMASKSTART1 = 6 PBLKMASKEND1 = 8
0 1 2 700 701
PBLKMASKSTART2 = PBLKMASKEND2 = 703
PBL
K
0
5586-010
Figure 25. PBLK Masking Example