AD9927 Analog Devices, AD9927 Datasheet - Page 39

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

Hold Area Using FREEZE/RESUME Registers
The FREEZE/RESUME registers can also be used to create a
hold area in which the V-outputs are temporarily held and later
continued, starting at the point where they were held. As shown
in Figure 46, this is different than the VMASK_EN register because
the V-outputs continue from where they stopped rather than
continuing from where they would have been. The hold area
temporarily stops the pixel counter for the V-outputs, while the
V-masking allows the counter to continue in the masking area.
XV10
XV1
XV8
XV9
NOTES
1. WHEN HOLD = 1 FOR ANY V-SEQUENCE GROUP, THE FREEZE AND RESUME REGISTERS ARE USED TO SPECIFY THE HOLD AREA.
2. ABOVE EXAMPLE: XV1 TO XV10 ARE ASSIGNED TO GROUP A. HOLD BIT FOR GROUP A = 1.
3. H-COUNTER FOR GROUP A (XV1 TO XV10) STOPS DURING HOLD AREA.
HD
Figure 46. Hold Area for Group A
Rev. 0 | Page 39 of 100
FREEZE
FOR GROUP A
HOLD AREA
RESUME
AD9927