Programmable radio transceivers

A radio frequency transceiver device comprises a control register unit including one or more registers and a central processing unit arranged to access the one or more registers via a memory bus. The device also comprises a sequencer module comprising one or more configuration registers connected to the central processing unit via a control bus and also comprises one or more trigger inputs. A sequencer memory module is connected to the sequencer module and is arranged to store one or more read/write commands comprising instructions to read from and/or write to the registers within the control register unit. The sequencer module is arranged such that upon receiving a trigger event via at least one of the one or more trigger inputs, it executes the one or more read/write commands.