PM2VI_RD_MCLK_CONTROL
pm2_WR(par, PM2VR_RD_INDEX_HIGH, PM2VI_RD_MCLK_CONTROL >> 8);
pm2v_RDAC_WR(par, PM2VI_RD_MCLK_CONTROL, 0);
pm2v_RDAC_WR(par, PM2VI_RD_MCLK_CONTROL, 1);
if (pm2v_RDAC_RD(par, PM2VI_RD_MCLK_CONTROL) & 2)