3.3 General Format of HCI Event Responses (BM70/71 to Host)

The following figure illustrates the general message format of the HCI Event packet. All HCI Event packet messages from the IS8170/71 IC to the host follow this format.

Figure 3-3. HCI Event Response Format

The type of event code message sent from the BM70/71 to the host is dependent on the type of HCI Command packet or HCI-ISDAP Flash commands sent by the host. For each HCI Command packet or HCI-ISDAP Flash packet, the BM70/71 responds to the host MCU with an event response(s) based on the received command. The meaning and values of the parameters in the HCI Event packet are described in detail in the Bluetooth specification. For brief information on the HCI command packets, see HCI Command Packets. Microchip recommends the user study and understand the information covered in the Bluetooth Specification regarding HCI Event packets.