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AD9920ABBCZ 数据表(PDF) 67 Page - Analog Devices |
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AD9920ABBCZ 数据表(HTML) 67 Page - Analog Devices |
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67 / 112 page ![]() AD9920A Rev. B | Page 67 of 112 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 ← 0x0004000 0x7C ← 0x000A001 0x7D ← 0x0002000 0x7E ← 0x000000F 0x7F ← 0x00C4002 0x80 ← 0x0004000 0x81 ← 0x00000B3 0x73 ← 0x0000006 Details A) Field 0: 0x70 ← 0x0000010 B) Field 2: 0x70 ← 0x0000007 VD 1 2345 REGISTER WRITE AB GP1_PROTOCOL 06 0 (IDLE) 1 2 1 210 GPO1 TERMINATED AT VD EDGE CAUTION! THE FIELD COUNTER MUST BE FORCED INTO IDLE STATE TO TERMINATE REPETITIONS. SECONDARY COUNT Figure 86. RapidShot Toggle Operation Using GP_PROTOCOL = 6 ShotTimer Sequences ShotTimer 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 ← 0x0004000 0x72 ← 0x000C000 0x7C ← 0x000A001 0x7D ← 0x0002000 0x7E ← 0x000000F 0x73 ← 0x0000006 Details A) Field 0: 0x70 ← 0x0000018 VD 1 2 REGISTER WRITE A GP1_PROTOCOL 06 0 (IDLE) 1 2 3 1 2 0 GPO1 SECONDARY COUNT Figure 87. ShotTimer Toggle Operation Using GP_PROTOCOL = 6 |
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