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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD9923ABBCZRL датащи(PDF) 31 Page - Analog Devices |
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AD9923ABBCZRL датащи(HTML) 31 Page - Analog Devices |
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31 / 88 page  AD9923A Rev. 0 | Page 31 of 88 Masking Using Freeze/Resume Registers As shown in Figure 42 and Figure 43, the FREEZE/RESUME registers are used to temporarily mask the XV outputs. The pixel locations to start (FREEZE) and end (RESUME) the masking create an area in which the vertical toggle positions are ignored. At the pixel location specified in the FREEZE register, the XV outputs are held static at their current dc state, high or low. The XV outputs are held until the internal pixel counter reaches the pixel location specified by the RESUME register, at which point the signals continue with any remaining toggle positions. Two sets of FREEZE/RESUME registers are provided, allowing the vertical outputs to be interrupted twice in the same line. The FREEZE and RESUME positions are enabled using the VMASK register. It is not recommended to use FREEZE/RESUME at the same time as the SWEEP function. XV1 XV13 HD NO MASKING AREA Figure 42. Not Using FREEZE/RESUME XV1 XV13 HD NOTES 1. ALL TOGGLE POSITIONS WITHIN THE FREEZE-RESUME MASKING AREA ARE IGNORED. H-COUNTER CONTINUES TO COUNT DURING MASKING. 2. TWO SEPARATE MASKING AREAS ARE AVAILABLE FOR EACH GROUP A, USING FREEZE1/RESUME1 AND FREEZE2/RESUME2 REGISTERS. MASKING AREA FOR GROUP A FREEZE RESUME Figure 43. Using FREEZE/RESUME |
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