There are two programmable communication timeout thresholds, CTS timer and CTL timer, that monitor the absence of a valid frame from either UART or daisy-chain communication. A valid frame is defined as any frame (response or command) that does NOT contain any errors that prevent the frame from being processed. The communication timeouts are only actively counting while in ACTIVE mode. The counters are disabled and reset during SHUTDOWN mode. In SLEEP mode, the last counter values are held frozen.