How to switch between Tx channels


I have a custom board with LMS7002m transceiver. I am trying to figure out how to switch between Tx channel A and channel B, such that when one Tx channel is active then the other is passive (not transmitting at all). The switching needs to be done after every 5 sec. I have configured all the Tx channels with the required parameters like frequency and gain etc.
In my current setup the MAC[1:0] is set to ‘11’. Will toggling TXEN_A and TXEN_B do the job?
Is there any API function available to turn on/off the Tx block of LMS7002m?