CZ_FWCTL_READ
cz->cz_nchannels = CZ_FWCTL_READ(cz, BRDCTL_NCHANNEL);
fid = CZ_FWCTL_READ(cz, BRDCTL_FWVERSION);
channel = CZ_FWCTL_READ(cz, BRDCTL_FWCMD_CHANNEL);
param = CZ_FWCTL_READ(cz, BRDCTL_FWCMD_PARAM);