The device makes extensive use of pin multiplexing to accommodate the large number of peripheral functions in the smallest possible package. To achieve this configuration, pin multiplexing is controlled using a combination of hardware configuration (at device reset) and register control.
TI highly recommends using Pin Mux Tool to obtain the desired pinout.
The board and software designers are responsible for the proper pin multiplexing configuration. Hardware does not ensure that the proper pin multiplexing options are selected for the peripherals or interface mode used.
Section 7.2.1 and Table 7-1 list the pin descriptions and attributes. Section 7.3.1 lists the signal descriptions. Table 7-2 presents an overall view of pin multiplexing. All pin multiplexing options are configurable using the pin mux registers.
The following special considerations apply:
If an external device drives a positive voltage to the signal pads and the CC3220x device is not powered, DC is drawn from the other device. If the drive strength of the external device is adequate, an unintentional wakeup and boot of the CC3220x device can occur. To prevent current draw, TI recommends any one of the following conditions: