RZ_MTU3_TCNTLW
*val = rz_mtu3_32bit_ch_read(ch, RZ_MTU3_TCNTLW);
rz_mtu3_32bit_ch_write(ch, RZ_MTU3_TCNTLW, val);
[RZ_MTU3_TCNTLW] = _tcntlw, \