SBOS891B October 2018 – April 2021 TMP144
The host can initiate a global clear interrupt command (C[7:0] = 10101001) to all TMP144 devices in the daisy-chain as shown in Figure 7-11. Upon receiving this command, the TMP144 disables future interrupts (bit-11 in the Configuration Register is set to 0). If a TMP144 previously broke the bus connection and sent an interrupt (logic low on the bus), the device now stops holding the bus low. The device sends the baud rate calibration command and clear interrupt command to the next TMP144 in the chain, then reconnects the bus. In the case of multiple devices having active interrupts, the clear interrupt command propagates through the daisy-chain, disables all interrupts, and reconnects the bus across all devices.