5.6 Device Test Mode (DTM)

The RNBD451 module has support for a special mode called Device Test Mode (DTM). By using the DTM command, the user can configure the RNBD451 module to operate in the DTM. Staying in the DTM mode, the RNBD451 module supports a series of DTM commands. In the DTM mode, all the input commands and response events are in HCI format. The first byte of HCI format is a packet type, where 0x01 represents the command packet and 0x04 represents the event packet. The RNBD451 module supports seven HCI commands. The following section describes each HCI command in detail. If users send the software reset command, the RNBD451 module resets and enters into Data mode.

Figure 5-5. HCI Command Format
Figure 5-6. HCI Command Parameter Description
Figure 5-7. HCI Event Format
Figure 5-8. HCI Event Parameter Description