5.1 Configuration of Devices

The AWR2243 devices in a cascaded chip system need to be configured as either MULTICHIP_MASTER or MULTICHIP_SLAVE. This can be done through the message AWR_CHAN_CONF_SET_SB. Note that the message allows a SINGLECHIP option, typically applicable only to single chip systems.

Only one AWR2243 device should be configured as MULTICHIP_MASTER. This AWR2243 device is the master chip and generates FMCW LO and conveys to other MULTICHIP_SLAVE AWR2243 devices in the cascaded chip system.

Typically, the MULTICHIP_MASTER’s DIG_SYNC_OUT pin is connected to the DIG_SYNC_IN pins of all the AWR2243 devices in the cascaded chip system. This allows the timing of chirps to be synchronous across the AWR2243 devices.