Can we remove the series resistors connected to i.MX6 BOOT_CFG?

[satoshishimoda]

Hi community,

Our partner have a question about i.MX6DQ design.

Please see page.21 of SABRE-SD schematics (SPF-27392_C5).

They want to remove the series resistors (RN50x) to reduce a number of parts and board space.

So would you let us know the role of the series resistors and whether these are removable or not?

Best Regards,

Satoshi Shimoda

[igorpadykov · Accepted solution]

Hi Satoshi

bus isolation circuit is described on Figure 2-1 and Table 2-2. EIM

recommendations for developer’s boot modes IMX6DQ6SDLHDG

Role RN50x is to avoid shortcircuit when SW6 is switched to GEN_3V3.

Best regards

igor

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[akshatsaraf]

Can I tied (Boot Configuration 3 and Boot Configuration 4 signals) directly to the ground?

[igorpadykov]

yes if you are not using these pins for other purposes.

[akshatsaraf]

Thanks igorpadykov.