AD9925 Datasheet, PDF (40/96 Pages) Analog Devices – CCD Signal Processor with Vertical Driver and Precision Timing Generator

AD9925
TRIGGER
EXPOSURE
AND STROBE
VD
XSG
SUBCK
t_EXP
STROBE ₁
2
3
STROBE PROGRAMMABLE SETTINGS:
1. ACTIVE POLARITY.
2. ON-POSITION IS PROGRAMMABLE IN ANY FIELD DURING THE EXPOSURE TIME (WITH RESPECT TO THE FIELD CONTAINING THE LAST SUBCK).
3. OFF-POSITION IS PROGRAMMABLE IN ANY FIELD DURING THE EXPOSURE TIME.
Figure 50. STROBE Output Programmability
Table 20. VSUB, MSHUT, and STROBE Register Parameters
Register
Length Range
Description
VSUBMODE[0]
1b
High/Low
VSUB Mode (0 = Mode 0, 1 = Mode 1) (See Figure 44).
VSUBMODE[1]
1b
High/Low
VSUB Keep-On Mode. VSUB will stay active after readout when set high.
VSUBON[11:0]
12 b 0 to 4095 Line Location
VSUB On Position. Active starting in any line of field.
VSUBON[12]
1b
High/Low
VSUB Active Polarity.
MSHUTPOL[0]
1b
High/Low
MSHUT Active Polarity.
MSHUTPOL[1]
1b
On/Off
MSHUT Manual Enable (1 = Active or Open).
MSHUTON
24 b 0 to 4095 Line/Pixel Location MSHUT On Position Line [11:0] and Pixel [23:12] Location.
MSHUTOFF_FD 12 b 0 to 4095 Field Location
Field Location to Switch Off MSHUT (Inactive or Closed).
MSHUTOFF_LNPX 24 b 0 to 4095 Line/Pixel Location Line/Pixel Position to Switch Off MSHUT (Inactive or Closed).
STROBPOL
1b
High/Low
STROBE Active Polarity.
STROBON_FD
12 b 0 to 4095 Field Location
STROBE ON Field Location, with Respect to Last SUBCK Field.
STROBON_LNPX 24 b 0 to 4095 Line/Pixel Location STROBE ON Line/Pixel Position.
STROBOFF_FD 12 b 0 to 4095 Field Location
STROBE OFF Field Location, with Respect to Last SUBCK Field.
STROBOFF_LNPX 24 b 0 to 4095 Line/Pixel Location STROBE OFF Line/Pixel Position.
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