Datasheet
AD9974
Rev. A | Page 19 of 52
Table 11. CLPOB and PBLK Pattern Registers
Parameter Length (Bits) Range Description
CLPOB0_TOG1 13 0 to 8191 pixel location First CLPOB0 toggle position within the line for each V-sequence.
CLPOB0_TOG2 13 0 to 8191 pixel location Second CLPOB0 toggle position within the line for each V-sequence.
CLPOB1_TOG1 13 0 to 8191 pixel location First CLPOB1 toggle position within the line for each V-sequence.
CLPOB1_TOG2 13 0 to 8191 pixel location Second CLPOB1 toggle position within the line for each V-sequence.
CLPOB_POL 9 High/low Starting polarity of CLPOB for each V-sequence [8:0] (in field registers).
CLPOB_PAT 9 0 to 9 settings CLPOB pattern selection for each V-sequence [8:0] (in field registers).
CLPOBMASKSTART 13 0 to 8191 pixel location CLPOB mask start position: three values available (in field registers).
CLPOBMASKEND 13 0 to 8191 pixel location CLPOB mask end position: three values available (in field registers).
PBLK0_TOG1 13 0 to 8191 pixel location First PBLK0 toggle position within the line for each V-sequence.
PBLK0_TOG2 13 0 to 8191 pixel location Second PBLK0 toggle position within the line for each V-sequence.
PBLK1_TOG1 13 0 to 8191 pixel location First PBLK1 toggle position within the line for each V-sequence.
PBLK1_TOG2 13 0 to 8191 pixel location Second toggle position within the line for each V-sequence.
PBLK_POL 9 High/low Starting polarity of PBLK for each V-sequence [8:0] (in field registers).
PBLK_PAT 9 0 to 9 settings PBLK pattern selection for each V-sequence [8:0] (in field registers).
PBLKMASKSTART 13 0 to 8191 pixel location PBLK mask start position: three values available (in field registers).
PBLKMASKEND 13 0 to 8191 pixel location PBLK mask end position: three values available (in field registers).
HD
HBLK
BASIC HBLK PULSE IS GENERATED USING HBLKTOGE1 AND HBLKTOGE2 REGISTERS (HBLKALT = 0).
BLANK BLANK
HBLKTOGE1 HBLKTOGE2
05955-025
Figure 25. Typical Horizontal Blanking Pulse Placement (HBLKMODE = 0)
HD
HBLK
H1/H3
H1/H3
H2/H4
THE POLARITY OF H1/H3 DURING BLANKING IS PROGRAMMABLE
(H2/H4 POLARITY IS SEPARATELY PROGRAMMABLE)
05955-026
Figure 26. HBLK Masking Control