Hi All,
We are designing a new board based on AM335x, in which we are planning to use Numonyx SPI Flash (Part No N25Q256). We intend to utilize SPI Flash for our board. This SPI flash is of size 32MB (256-Mbits).
The AM335x TRM(spruh73l.pdf) page no.4951 talks about the restrictions when using SPI boot mode.
Supports 12-MHz clock (50% duty cycle).
• Supports only SPI Mode 3 (clock polarity = 1, clock phase = 1).
• Supports only 24-bit addressable EEPROMs. => Which means support for only 16MB flash memories.
• Supports only 4-pin SPI mode (CS, CLK, Serial Input, Serial Output).
• The boot devices must be connected to chip select 0 and must support the read command (03h).
• The boot image is copied into internal memory and then executed.
So we want to understand whether this particular SPI flash part can be used with AM335x for supporting SPI boot mode.
Thanks.
