Good day,
I need help with a SDRAM, I'm working with the IS42S16400B, it is a memory with 64Mbit and I've trying with the example sdram.c from the file TivaWare_C_Series-2.1.4.178\examples\peripherals\epi, I've compared with the AS4C4M16S and look pretty similar, and in this thread https://e2e.ti.com/support/microcontrollers/tiva_arm/f/908/p/392329/1384966 use it to their project. In the TivaWare example use this configuration:
EPIConfigSDRAMSet(EPI0_BASE, (ui32Freq | EPI_SDRAM_FULL_POWER |
EPI_SDRAM_SIZE_512MBIT), 468);
EPIAddressMapSet(EPI0_BASE, EPI_ADDR_RAM_SIZE_256MB | EPI_ADDR_RAM_BASE_6);
As you can see I didn't change the refresh counter, becouse I'm using the same clock speed of the example. This config does not work for me, somebody has used with success this SDRAM or similar.
Regards
ANDRÉS FELIPE RODRÍGUEZ
Links SDRAM:
http://www.issiusa.com/pdf/42S16400B.pdf
https://www.alliancememory.com/wp-content/uploads/pdf/dram/64M-AS4C4M16S-FBGA.pdf
