16.2.4 Resets

The COMM_BLK resets to zero on power-up and is held in reset until it is enabled. There is an option to reset the COMM_BLK by writing to the system register.

Specifically, this system register is 21.5.19 Software Reset Control Register in the 21 System Register Block. The COMBLK_SOFTRESET control bit is encoded in bit location 15 as follows:

• 0: COMM_BLK reset released
• 1: COMM_BLK held in reset (reset value)

At Power-Up, the Reset signal is asserted to 1. This keeps the COMM_BLK peripheral in a reset state. If this bit is set to 0, the COMM_BLK peripheral is allowed to become active.