AD9927 Analog Devices, AD9927 Datasheet - Page 36

• Manufacturer Part Number: AD9927
• Description: 14-Bit CCD Signal Processor
• Manufacturer: Analog Devices

AD9927
XV1 TO XV23
VALTSEL0_EVEN
VALTSEL1_EVEN
V-PATTERN
COMBINED
HD
Figure 42. Example of Special V-Sequence Alternation Mode Using VALTSEL Registers to Specify Segment Order
XV23
XV23
XV1
XV2
XV3
HD
XV1
XV2
XV3
NOTES
1. SIX V-PATTERN SEGMENTS CONCATENATED INTO A MERGED PATTERN.
2. COMMON AND REPETITIVE VTP SEGMENTS DERIVED FROM THE COMPLETE VTP PATTERN.
3. VALTSEL REGISTERS SPECIFY SEGMENT ORDER TO CREATE THE CONCATENATED MERGED PATTERN.
NOTES
1. EACH SEGMENT MUST BE THE SAME LENGTH.
V-PATTERN A
NOTES
1. ABLE TO CONCATENATE PATTERNS TOGETHER ARBITRARILY.
2. EACH PATTERN CAN HAVE UP TO FOUR TOGGLES PROGRAMMED.
3. MAY CONCATENATE UP TO 18 PATTERNS INTO A MERGED PATTERN.
4. ODD AND EVEN LINES CAN HAVE A DIFFERENT PATTERN CONCATENATION
Figure 40. Vertical Timing Divided Into Four Segments: VPATA, VPATB, VPATC, and VPATD
VLENA = VLENB = VLENC = VLEND.
SEGMENT 1
VPATA
SPECIFIED BY VALTSEL EVEN AND ODD REGISTERS.
VLENA
0
0
A B B D A C C
A
Figure 41. Concatenating Each VPAT Group in Arbitrary Order
SEGMENT 2
C
VPATC
B
0
1
A
D
V-PATTERN B
VLENB
D
SEGMENT 3
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A
VPATB
1
0
SEGMENT4
V-PATTERN C
VPATD
B C B D A B A A
VLENC
1
1
SEGMENT 5
VPATD
1
1
V-PATTERN D
VLEND
SEGMENT 6
VPATA
0
0