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NRF52820-QDAA-R Datasheet(PDF) 152 Page - Nordic Semiconductor |
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NRF52820-QDAA-R Datasheet(HTML) 152 Page - Nordic Semiconductor |
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152 / 437 page  Peripherals Register Offset Description PSEL.A 0x520 Pin select for A signal PSEL.B 0x524 Pin select for B signal DBFEN 0x528 Enable input debounce filters LEDPRE 0x540 Time period the LED is switched ON prior to sampling ACCDBL 0x544 Register accumulating the number of detected double transitions ACCDBLREAD 0x548 Snapshot of the ACCDBL, updated by the READCLRACC or RDCLRDBL task Table 52: Register overview 6.11.7.1 TASKS_START Address offset: 0x000 Task starting the quadrature decoder When started, the SAMPLE register will be continuously updated at the rate given in the SAMPLEPER register. Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 ID A Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ID Access Field Value ID Value Description A W TASKS_START Task starting the quadrature decoder When started, the SAMPLE register will be continuously updated at the rate given in the SAMPLEPER register. Trigger 1 Trigger task 6.11.7.2 TASKS_STOP Address offset: 0x004 Task stopping the quadrature decoder Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 ID A Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ID Access Field Value ID Value Description A W TASKS_STOP Task stopping the quadrature decoder Trigger 1 Trigger task 6.11.7.3 TASKS_READCLRACC Address offset: 0x008 Read and clear ACC and ACCDBL Task transferring the content of ACC to ACCREAD and the content of ACCDBL to ACCDBLREAD, and then clearing the ACC and ACCDBL registers. These read-and-clear operations will be done atomically. 4463_156 v1.0 152 |
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