SPRUIV7B May 2022 – September 2023 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
After device configuration, the bootloader performs a standard BOOTP/TFTP boot. The device sends a BOOTP request with its MAC address to a host TFTP server to be assigned an IP from a pool of addresses. The timeout for each BOOTP packet is 4 seconds, and the ROM will attempt 10 BOOTP retries, after which the boot mode will fail. If the connection is established, the device initiates a TFTP download and is able to receive image data encapsulated in Ethernet packets, see Section 5.4.5.1.2.1. There is a timeout of 1 second to receive a response for the READ request, and the ROM will retry the READ request 10 times, after which the boot mode will fail. If TFTP download is successful, data received is stripped of its network headers and the boot data is stored in internal RAM. When the transfer completes and the image is found in good integrity, the ROM Code will branch to the address defined in the Boot Info field of the boot header.