i.MX ProcessorsのトピックRe: imx6dl external asynchronous SRAM

imx6dl external asynchronous SRAM

shashikanthirem — Thu, 25 Jun 2020 20:27:03 GMT

Hi All,

I have one doubt on imx6dl platform

do we have EIM_LBA polarity configurable ?

Note:

as EIM_LBA pin is connected to external SRAM latch pin which is a active high signal,

Ideally we should have put a NOT gate between EIM_LBA and Latch Enable pin of ext SRAM , as this EIM_LBA is active low, make ADDR to get latch this pin will be ZERO, but our ext SRAM latch pin is active HIGH, which does not work at all,

guys any input on work around on software without making hardware change.

Re: imx6dl external asynchronous SRAM

igorpadykov — Thu, 25 Jun 2020 23:41:37 GMT

Hi shashikant

>do we have EIM_LBA polarity configurable ?

unfortunately not, polarity is not configurable.

Best regards
igor
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Re: imx6dl external asynchronous SRAM

shashikanthirem — Fri, 26 Jun 2020 02:40:06 GMT

ok so this has to be a hardware change in my scenario