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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD9927BBCZ датащи(PDF) 40 Page - Analog Devices |
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AD9927BBCZ датащи(HTML) 40 Page - Analog Devices |
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40 / 100 page  AD9927 Rev. 0 | Page 40 of 100 Special Pattern Insertion Additional flexibility is available using the SPC_PAT_EN registers, which allows a Group B, C, or D pattern to be inserted into a series of Group A repetitions. This feature is useful when a different pattern is needed at the start, middle, or end of a sequence. Figure 47 shows an example of a sweep region using VPATA with multiple repetitions where a single repetition of VPATB has been added into the middle of the sequence. Figure 48 shows more detail on how to set the registers to achieve the desired timing. Note that VREPB is used to specify which repetition number has the special pattern inserted instead of VPATA. VPATB always has priority over VPATC or VPATD if more than one SPC_PAT_EN bit is enabled (SPC_PAT_EN [0] has priority). VD XV1 TO XVN HD REGION 1: SWEEP REGION LINE 0 LINE 1 REGION 0 REGION 2 LINE 24 LINE 25 LINE 2 SCP1 SCP2 PATTERN B INSERTED DURING PATTERN A REPETITIONS Figure 47. Example of Special Pattern Insertion XV1 HD V-PATTERN A V-PATTERN B V-PATTERN A REP 1 REP 2 REP N REP 5 REP 4 REP 3 REGISTER SETTINGS: DESCRIPTION: SPC_PAT_EN[0] = 1 V-PATTERN B IS USED AS SPECIAL PATTERN VREPA = N TOTAL NUMBER OF REPS USED FOR SEQUENCE (N REPS) VREPB = 4 REP 4 USES V-PATTERN B INSTEAD OF V-PATTERN A NOTES 1. VSTARTB MUST BE SET EQUAL TO VSTARTA. Figure 48. Example of Special Pattern Insertion, Detail |
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