AD9891_15 Datasheet, PDF (28/58 Pages) Analog Devices – CCD Signal Processors with Precision Timing Generator

AD9891/AD9895
VD
VSG1–
VSG8
SUBCK
t_EXP
MSHUT 1
2
3
MSHUT PROGRAMMABLE SETTINGS:
1: ACTIVE POLARITY
2: ON-POSITION IS VD UPDATED AND MAY BE SWITCHED ON AT ANY TIME
3: OFF-POSITION CAN BE PROGRAMMED ANYWHERE FROM THE FIELD OF LAST SUBCK UNTIL THE FIELD BEFORE READOUT
Figure 33. MSHUT Output Programmability
VD
VSG1–
VSG8
SUBCK
t_EXP
STROBE ₁
2
3
STROBE PROGRAMMABLE SETTINGS:
1: ACTIVE POLARITY
2: ON-POSITION WITH RESPECT TO TO FIELD OF LAST SUBCK
3: OFF-POSITION CAN BE PROGRAMMED ANYWHERE DURING THE EXPOSURE TIME
Figure 34. STROBE Output Programmability
Register
TRIGGER
VSUBMODE
VSUBKEEPON
VSUBPOL
VSUBON
MSHUTON
MSHUTONPOS_LN
MSHUTONPOS_LN
MSHUTPOL
MSHUTOFF_FD
MSHUTOFF_LN
MSHUTOFF_PX
STROBPOL
STROBON_FD
STROBON_LN
STROBON_PX
STROBOFF_FD
STROBOFF_LN
STROBOFF_PX
Table XV. VSUB, MSHUT, and STROBE Register Parameters
Length
3b
1b
1b
1b
12b
1b
12b
12b
1b
12b
12b
12b
1b
12b
12b
12b
12b
12b
12b
Range
On/Off for Three Signals
HIGH/LOW
HIGH/LOW
HIGH/LOW
0–4095 Line Location
ON/OFF
0–4095 Line Location
0–4095 Pixel Location
HIGH/LOW
0–4095 Field Location
0–4095 Line Location
0–4095 Pixel Location
HIGH/LOW
0–4095 Field Location
0–4095 Line Location
0–4095 Pixel Location
0–4095 Field Location
0–4095 Line Location
0–4095 Pixel Location
Description
1-Bit Triggers for VSUB[0], MSHUT[1], and STROBE[2]
VSUB Mode (0 = Mode 0, 1 = Mode 1) (See Figure 27)
Sets VSUB to Stay Active after Readout When High
VSUB Active Polarity
VSUB On Position. Active starting in any line of field.
MSHUT Signal Enable (1 = Active or “Open”)
MSHUT Line Location
MSHUTON Pixel Location
MSHUT Active Polarity
Field Location to Switch OFF MSHUT. (Inactive or “Closed”)
Line Location to Switch OFF MSHUT. (Inactive or “Closed”)
Pixel Location to Switch OFF MSHUT. (Inactive or “Closed”)
STROBE Active Polarity
STROBE ON Field Location, with Respect to Last SUBCK Field
STROBE ON Line Location
STROBE ON Pixel Location
STROBE OFF Field Location, with Respect to Last SUBCK Field
STROBE OFF Location
STROBE OFF Location
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REV. A