Hello,
We are migrating a design from the AM3703 to the AM335x. On our current AM3703 design, we have to use an external address latch to integrate our memory mapped ASICs. This is an undesirable issue with the 3703 due to the cost and board space used for the address latch.
It appears the AM335X provides the option of using an address latch like the 3703 or set some pins to Mode 1 for a full address bus without the need for an address latch. GPMC_A0-19 are available with IO Mode 1. It is very desirable for us to use this option and avoid the address latch.
My concern is Bootup. We will boot using external NAND FLASH like we use with the 3703 and I want to make sure using the Mode 1 Address Lines will not interfere with booting up the AM335X and will allow enough time to initialize the pins before we need to access the ASIC on the Memory Bus. I am fairly confident that is the case, but I want to make sure before we commit too much work into this.
Thanks,
Andrea Ramos