SWCU191 February 2022 CC1311P3 , CC1311R3 , CC2651P3 , CC2651R3 , CC2651R3SIPA
This register guards the device from noise, hot connection of an emulator cable, or accidental scan by a misconfigured scan controller. This register reduces the chances of accidentally engaging debug functions due to noise or accidental scans. For more details, see Figure 7-10 and Table 7-10.
Bit | Field | Width | Type | Reset | Description |
---|---|---|---|---|---|
7 | Write Enable | 1 | W | 0 | Must be 1 to write the Connect Key. A value of 0 is a read. When read, a value of 0 is returned. |
6–4 | Reserved | 3 | R | 0 | Reserved |
3–0 | ConnectKey | 4 | R/W | 0110 | When this field holds the key code of 1001, the scan controller is considered to be connected. All other values are in the not-connected state. In this state, only a limited number of IR instructions are valid. |