Hi,
I am wondering how to enable the 4MB of SRAM soldered onto the MPC5676R DAT516 daughter card. I have gone through the manual it indicates JP4 is the SRAM_SEL jumper but no details on how to actually get this to work. Do I jump 1-2, 2-3 leave it open? Then, do I map the 4MB into the SRAM area (0x40000000) or is this considered External (0x20000000). This may be basic stuff but its a mystery to me.
Any help would be appreciated. Thanks.
Luke
It depends whether you have configured CS0 or CS1.
You may see my example code here, it initialized external RAM in main.c file, function External_SRAM_init:
https://community.nxp.com/docs/DOC-102745
My initialization uses CS0 thus JP4 needs to be in position 1-2. Then you’ll access address 0x20000000 and higher.