AD9992_15 Datasheet, PDF (52/92 Pages) Analog Devices – 12-Bit CCD Signal Processor with Precision Timing Generator

AD9992
Table 23. GPO Registers
Register
Length
GP1_PROTOCOL 3b
GP2_PROTOCOL 3b
GP3_PROTOCOL 3b
GP4_PROTOCOL 3b
GP5_PROTOCOL 3b
GP6_PROTOCOL 3b
GP7_PROTOCOL 3b
GP8_PROTOCOL 8b
MANUAL_TRIG
8b
GP<1:8>_POL
8b
SEL_GP<1:8>
8b
GPO_OUTPUT_EN 8b
GP*_USE_LUT
8b
LUT_FOR_GP12
4b
LUT_FOR_GP34
4b
LUT_FOR_GP56
4b
LUT_FOR_GP78
4b
GP*_TOG*_FD
13b
GP*_TOG*_LN
13b
GP*_TOG*_PX
13b
GPO_INT_EN
1b
Range
0 to 7
0 to 7
0 to 7
0 to 7
0 to 7
0 to 7
0 to 7
0 to 7
Off/on
Low/high
Off/on
Off/on
Off/on
Logic setting
Logic setting
Logic setting
Logic setting
0 to 8191 field
0 to 8191 line
0 to 8191 pixel
Off/on
Description
0: Idle.
1: No counter association, use MANUAL_TRIG bits to enable each GP signal.
2: Link to primary counter.
3: Link to secondary counter.
4: Link to mode counter (from vertical timing generation).
5: Primary repeat (allows GP signals to repeat with RapidShot).
6: Secondary repeat (allows GP signals to repeat with RapidShot).
7: Keep on.
Manual trigger for each GP signal, for use with Protocol 1.
Starting polarity for GP signals, only updated during PROTOCOL = 0.
1: Select GP toggles visible at GPO1 to GPO8 when output is enabled (default);
0: Select vertical signals visible at GPO4 to GPO8 when output is enabled.
GPO4: SUBCK.
GPO5: XV21.
GPO6: XV22.
GPO7: XV23.
GPO8: XV24.
1: Enable GPO1 to GPO8 outputs (one bit per output).
0: Disable GPO1 to GPO8 outputs, pins will be high-Z state (default).
Send GP signals through a programmable look-up table (LUT).
Desired logic to be realized on GP1 combined with GP2.
Desired logic to be realized on GP3 combined with GP4.
Desired logic to be realized on GP5 combined with GP6.
Desired logic to be realized on GP7 combined with GP8.
Example logic settings for LUT_FOR_GPxy:
0x6: GPy XOR GPx (see Figure 64).
0x7: GPy NAND GPx.
0x8: GPy AND GPx.
0xE: GPy OR GPx.
Field of activity, relative to primary and secondary counter for corresponding toggle.
Line of activity for corresponding toggle.
Pixel of activity for corresponding toggle.
When set to 1, internal signals are viewable on GPO5 to GPO8.
GPO5: OUTCONTROL.
GPO6: HBLK.
GPO7: CLPOB.
GPO8: PBLK.
Rev. C | Page 52 of 92