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NRF52810-QFAA-R Datasheet(PDF) 375 Page - Nordic Semiconductor |
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NRF52810-QFAA-R Datasheet(HTML) 375 Page - Nordic Semiconductor |
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375 / 483 page  Peripherals buffer[0] buffer[1] buffer[0] buffer[1] buffer[0] buffer[1] 0x20000000 : MyArrayList[0] 0x20000004 : MyArrayList[1] 0x20000008 : MyArrayList[2] buffer[2] buffer[2] buffer[2] buffer[3] buffer[3] buffer[3] Channel.PTR = &MyArrayList Note: addresses are assuming that sizeof(buffer[n]) is one byte Figure 99: EasyDMA array list 6.18.4 Low power When putting the system in low power and the peripheral is not needed, lowest possible power consumption is achieved by stopping, and then disabling the peripheral. The STOP task may not be always needed (the peripheral might already be stopped), but if it is sent, software shall wait until the STOPPED event was received as a response before disabling the peripheral through the ENABLE register. 6.18.5 Registers Base address Peripheral Instance Description Configuration 0x40004000 SPIM SPIM0 SPI master Table 75: Instances Register Offset Description TASKS_START 0x010 Start SPI transaction TASKS_STOP 0x014 Stop SPI transaction TASKS_SUSPEND 0x01C Suspend SPI transaction TASKS_RESUME 0x020 Resume SPI transaction EVENTS_STOPPED 0x104 SPI transaction has stopped EVENTS_ENDRX 0x110 End of RXD buffer reached EVENTS_END 0x118 End of RXD buffer and TXD buffer reached EVENTS_ENDTX 0x120 End of TXD buffer reached EVENTS_STARTED 0x14C Transaction started SHORTS 0x200 Shortcut register INTENSET 0x304 Enable interrupt INTENCLR 0x308 Disable interrupt ENABLE 0x500 Enable SPIM PSEL.SCK 0x508 Pin select for SCK PSEL.MOSI 0x50C Pin select for MOSI signal PSEL.MISO 0x510 Pin select for MISO signal FREQUENCY 0x524 SPI frequency. Accuracy depends on the HFCLK source selected. RXD.PTR 0x534 Data pointer RXD.MAXCNT 0x538 Maximum number of bytes in receive buffer RXD.AMOUNT 0x53C Number of bytes transferred in the last transaction RXD.LIST 0x540 EasyDMA list type TXD.PTR 0x544 Data pointer TXD.MAXCNT 0x548 Maximum number of bytes in transmit buffer TXD.AMOUNT 0x54C Number of bytes transferred in the last transaction TXD.LIST 0x550 EasyDMA list type CONFIG 0x554 Configuration register ORC 0x5C0 Over-read character. Character clocked out in case and over-read of the TXD buffer. Table 76: Register Overview 4430_161 v1.0 375 |
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