DSP的PSC如何配置

这个程序大概什么意思，逐句求解一下！/*Enable Function for PSC0*/void PSC0_lPSC_enable(unsigned int PD, unsigned int LPSC_num) { *(unsigned int*) (PSC0_MDCTL+4*LPSC_num) = (*(unsigned int*) (PSC0_MDCTL+4*LPSC_num) & 0xFFFFFFE0) | 0x0003; PSC0_PTCMD = 0x1<<PD; while( (PSC0_PTSTAT & (0x1<<PD) ) ！=0) ; /*Wait for power state transition to finish*/ while( (*(unsigned int*)(PSC0_MDSTAT+4 * LPSC_num) & 0x3F) ！=0x3); }/*Enable Function for PSC1*/void PSC1_lPSC_enable(unsigned int PD, unsigned int LPSC_num) { *(unsigned int*) (PSC1_MDCTL+4*LPSC_num) = (*(unsigned int*) (PSC1_MDCTL+4*LPSC_num) & 0xFFFFFFE0) | 0x0003; PSC1_PTCMD = 0x1<<PD; while( (PSC1_PTSTAT & (0x1<<PD) ) ！=0) ; /*Wait for power state transition to finish*/ while( (*(unsigned int*)(PSC1_MDSTAT+4 * LPSC_num) & 0x3F) ！=0x3);}

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