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AD9925 データシート(PDF) 24 Page - Analog Devices |
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AD9925 データシート(HTML) 24 Page - Analog Devices |
24 / 96 page AD9925 Rev. A | Page 24 of 96 ixel locations within the line where the pulse transitions. A ourth toggle position (XVTOG4) is also available for vertical pattern groups 8 and 9. All toggle positions are 12-bit values, allowing their placement anywhere in the horizontal line. A the ces he llows the AD9925 to remain back- ward-compatible with the AD9995 register settings while still providing additional flexibility with XV7 and XV8 for new CCDs. Table 13. Vertical Pattern Group Registers Register Length Range Description Vertical Pattern Groups (VPAT) The vertical pattern groups define the individual pulse patterns for each XV1 to XV6 output signal. Table 13 summarizes the registers available for generating each of the 10 vertical pattern groups. The start polarity (VPOL) determines the starting polarity of the vertical sequence and can be programmed high or low for each XV1 to XV6 output. The first, second, and third toggle positions (XVTOG1, XVTOG2, and XVTOG3) are the separate register, VPATSTART, specifies the start position of vertical pattern groups within the line (see the Vertical Sequen (VSEQ) section). The VPATLEN register designates the total length of the vertical pattern group, which determines the number of pixels between each of the pattern repetitions when repetitions are used (see the Vertical Sequences (VSEQ) section). Additional VPAT groups are provided in Register Bank 3 for t XV7 and XV8 outputs. This a p f XVPOL 1 b High/Low Starting Polarity of Each XV Output XVTOG1 12 b 0 to 4096 Pixel Location First To for Each XV Output ggle Position within Line XVTOG2 12 b 0 to 4096 Pixel Location Second To Line for Each XV Output ggle Position within XVTOG3 12 b 0 to 4096 Pixel Location Third Toggle Position within Line for Each XV Output XVTOG4 12 b 0 to 4096 Pixel Location Fourth Toggle Po rtical Pattern Groups 8 and 9 and Also in XV7 and XV8 Vertical Pattern Groups VPATLEN 12 b 0 to 4096 Pixels sition, Only Available in Ve Total Length of Each Vertical Pattern Group FREEZE1 12 b 0 to 4096 Pixel Location Holds the XV Outputs at Their Current Levels (Static DC) RESUME1 12 b 0 to 4096 Pixel Location Resumes Operation of the XV Outputs to Finish Their Pattern FREEZE2 12 b 0 to 4096 Pixel Location Holds the XV Outputs at Their Current Levels (Static DC) RESUME2 12 b 0 to 4096 Pixel Location Resumes Operation of the XV Outputs to Finish Their Pattern HD XV1 PROGRAMMABLE SETTINGS FOR EACH VERTICAL PATTERN: 1. START POLARITY. 2. FIRST TOGGLE POSITION. 3. SECOND TOGGLE POSITION (THIRD TOGGLE POSITION ALSO AVAILABLE, FOURTH TOGGLE POSITION AVAILABLE FOR VERTICAL PATTERN GROUPS 8 AND 9). 4. TOTAL PATTERN LENGTH FOR ALL XV OUTPUTS. START POSITION OF VERTICAL PATTERN GROUP IS PROGRAMMABLE IN VERTICAL SEQUENCE REGISTERS 4 1 23 XV2 1 2 3 XV6 1 23 Figure 31. Vertical Pattern Group Programmability |
同様の部品番号 - AD9925 |
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同様の説明 - AD9925 |
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