i.MX6ULL Serial downloader

ban45 · ‎03-01-2021

Hi,

I want to change BOOTMODE to a serial downloader.

Do I need to change the logic of the BOOT MODE pin?

If BOOTMODE [1: 0] = 2b10 and the internal memory is empty, do you boot from USB or UART?

Pull up and pull down　BOOT_CFG1[0]~BOOT_CFG4[7],

I have set it, but isn't it necessary for the serial downloader?

Does the USB download mode listed in the data sheet below include a UART?

i.MX 6ULL Applications Processor Reference Manual, Rev. 1, 11/2017　P331

8.12 SD/MMC manufacture mode　

Figure 8-27. SD/MMC manufacture boot flow

best regard

igorpadykov · ‎03-01-2021

Hi ban45

for boot resistors selection one can look at Table 6. Boot mode input recommendations

>Does the USB download mode listed in the data sheet below include a UART?

yes as described in Figure 8-2. Serial Downloader boot flow

Best regards
igor