AD9992_15 Datasheet, PDF (54/92 Pages) Analog Devices – 12-Bit CCD Signal Processor with Precision Timing Generator

AD9992
RapidShot Sequences
RapidShot technology provides continuous repetition of
scheduled toggles.
Preparation
The GP toggle positions can be programmed any time prior
to use. For example,
0x71
0x7A
0x7B
0x7C
0x7D
0x7E
0x7F
0x73
Å 0x0004000
Å 0x000A001
Å 0x0002000
Å 0x000000F
Å 0x00C4002
Å 0x0004000
Å 0x00000B3
Å 0x0000006
Details
A) Field 0:
B) Field 2:
0x70 Å 0x0000010
0x70 Å 0x0000007
VD
1
2
3
4
5
REGISTER WRITE
A
B
GP1_PROTOCOL 0
6
SECONDARY
COUNT
0 (IDLE)
1
2
1
2
1
0
GPO1
TERMINATED
AT VD EDGE
NOTES
1. THE GP PROTOCOLS ARE THE SAME AS THE SCHEDULED
TOGGLES, EXCEPT THE TOGGLES CAN BE EXCLUDED FROM
REPETITION BY CHOOSING GP PROTOCOL 2 OR 3.
CAUTION! THE FIELD COUNTER MUST BE FORCED INTO IDLE
STATE TO TERMINATE REPETITIONS.
Figure 61. RapidShot Toggle Operation Using GP1_PROTOCOL = 6
ShotDelay Sequences
ShotDelay technology provides internal delay of scheduled
toggles. The delay is in terms of fields.
Preparation
The GP toggle positions can be programmed any time prior
to use. For example,
0x71
0x72
0x7A
0x7B
0x7C
0x73
Å 0x0004000
Å 0x000C000
Å 0x000A001
Å 0x0002000
Å 0x000000F
Å 0x0000003
Details
A) Field 0:
0x70 Å 0x0000018
VD
1
2
REGISTER WRITE
A
GP1_PROTOCOL 0
3
SECONDARY
COUNT
0 (IDLE)
1
2
3
1
2
0
GPO1
Figure 62. ShotDelay Toggle Operation Using GP1_PROTOCOL = 3
Rev. C | Page 54 of 92