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AS89010 데이터시트(PDF) 13 Page - ams-OSRAM AG |
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AS89010 데이터시트(HTML) 13 Page - ams-OSRAM AG |
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13 / 43 page ![]() ams.com db12348e_V3.11_preliminary_2017-07-06 Page 11 of 41 AS89010 V3.11 Figure 7: SYNS Mode timing11 idle or standby idle or standby conversion data fetch conversion SYN OUT0..OUT3 STATE I²C activity data fetch READY TINT 5.1.4 Synchronous Measurement Start and Stop Mode (SYND Mode) The start and the stop of the measurement are completely controlled by the SYN signal. When the device is in the idle or Standby state the first coming falling edge starts the measurement. Each following falling edge of SYN, which occurs within the conversion, can stop or continue the measurement. The content of EDGES register determines which edge is the stopping one. This means that the measurement will not stop until a certain number of falling edges passed within the conversion time. This certain number of edges is represented by a value of register EDGES (see Figure 8 and Figure 9). For further details see also Figure 22. Figure 8: SYND Mode timing, register EDGES = 1 idle or standby idle or standby conversion data fetch conversion SYN OUT0..OUT3 STATE I²C activity data fetch READY TINT start edge stop edge 0 1 0 1 Figure 9: SYND Mode timing, register EDGES > 1 conversion idle or standby data fetch conversion SYN OUT0..OUT3 STATE I²C activity READY TINT start edge stop edge 0 1 EDGES-1 EDGES 0 1 Data fetch should be performed between the rising edge of READY signal and the next falling edge of SYN in order to allow distortion free measurement. 11 Dash lines indicate variable conditions |
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