PMC_PMCMCR2_REG
sequoiaRead(PMC_PMCMCR2_REG, &seqReg);
sequoiaWrite(PMC_PMCMCR2_REG, seqReg | (PMCMCR2_M_SWTCHEN));
sequoiaRead(PMC_PMCMCR2_REG, &seqReg);
sequoiaWrite(PMC_PMCMCR2_REG, seqReg | (PMCMCR2_M_SWTCHEN));