전자부품 데이터시트 검색엔진 |
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AD73311L 데이터시트(PDF) 29 Page - Analog Devices |
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AD73311L 데이터시트(HTML) 29 Page - Analog Devices |
29 / 37 page REV. A AD73311L –28– In the main body of the program, the code loops waiting for the initialization sequence to be completed. check_init: ax0 = dm (stat_flag); af = pass ax0; if ne jump check_init; If the AD73311L is used in a cascade of two or more codec units, it is important to observe some restrictions in the sequence of sending initialization words to the two codecs. It is preferable to send groups of control words for the corresponding control registers in each codec and it is essential to send the control words in descending order—last device first . . . first device last. Control Registers A and B contain settings, such as sampling rate, serial clock rate etc., which critically require synchronous update in each codec. Once the device has been initialized, Control Register A on each codecs is written with a control word which changes the Operating Mode from Program Mode to either Data Mode or Mixed Control Data Mode. The device count field, which defaults to 000b, will have to be programmed to the required setting—depending on the number of devices in cascade. In Data Mode or Mixed Mode, the main function of the device is to return ADC samples from each codec and to accept DAC words for each codecs. During each sample interval, ADC samples will be returned from the device equal to the number of devices in cascade, while in the same interval DAC update samples will be sent to the device again the number of DAC words being equal to the number of devices in the cascade. In order to reduce the number of interrupts and to reduce complexity, autobuffering can be used to ensure that only one interrupt is generated during each sampling interval. |
유사한 부품 번호 - AD73311L_17 |
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유사한 설명 - AD73311L_17 |
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