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AWR6843: 询问

Part Number: AWR6843

static inline void HWA_doReset(DSSHWACCRegs *ctrlBaseAddr)
{
ctrlBaseAddr->HWACCREG1 = CSL_FINSR(ctrlBaseAddr->HWACCREG1, 6U, 4U, 0x7U);
ctrlBaseAddr->HWACCREG1 = CSL_FINSR(ctrlBaseAddr->HWACCREG1, 6U, 4U, 0x0U);

return;
}

AWR6843dsk中HWA_doReset函数,请问为什么写HWACCREG1寄存器写了四遍,向HWACCREG1 第6-4位写7写了两遍,向HWACCREG1第6-4位写0也写了两遍