
AD9974
Rev. A | Page 16 of 52
12
43
H1 TO H4 PROGRAMMABLE LOCATIONS:
1H1 RISING EDGE.
2H1 FALLING EDGE.
3H2 RISING EDGE.
4H2 FALLING EDGE.
H2, H4
H1, H3
0
59
55
-0
19
Figure 19. HCLK Mode 2 Operation
12
4
3
H1 TO H4 PROGRAMMABLE LOCATIONS:
1H1 RISING EDGE.
2H1 FALLING EDGE.
3H3 RISING EDGE.
4H3 FALLING EDGE.
H3
H1
H2
H4
05
95
5-
0
20
Figure 20. HCLK Mode 3 Operation
NOTES
1. ALL SIGNAL EDGES ARE FULLY PROGRAMMABLE TO ANY OF THE 64 POSITIONS WITHIN ONE PIXEL PERIOD.
TYPICAL POSITIONS FOR EACH SIGNAL ARE SHOWN. HCLK MODE 1 IS SHOWN.
2. CERTAIN POSITIONS SHOULD BE AVOIDED FOR EACH SIGNAL, SHOWN ABOVE AS INHIBIT REGIONS.
3. IF A SETTING IN THE INHIBIT REGION IS USED, AN UNSTABLE PIXEL SHIFT CAN OCCUR IN THE HBLK LOCATION OR AFE PIPELINE.
P[0]
CLI
RG
P[64] = P[0]
CCD
SIGNAL
P[32]
P[16]
P[48]
POSITION
H2
RGr[0]
RGf[16]
SHD
SHDLOC[0]
H1
H1r[0]
H1f[32]
tS1
SHP
SHPLOC[32]
DOUTPHASEP
DATAPHASEP[32]
tDOUTINH
tSHDINH
tSHPINH
05
95
5-
0
21
Figure 21. High Speed Timing Default Locations