• State
  • Locked Locked
  • Replies 0 replies
  • Subscribers 96 subscribers
  • Views 239 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

How to set DM368 EMIF databus with 16bit

Jammy Dane
Intellectual 350 points

Hi all,

I am using EMIF of DM368, and I want using 16bit databus. I have read the arm subsystem and emif dataheet to set the A2CR register of EMIF to 16 bits mode by setting the ASIZE field to 1h, and I have set the Async EMIF Configuration (AECFG) Pin Mux Coding (AECFG register)to "101" by FPGA pull up, which enable the EM_A[14:0] and EM_D[15: 0].

but, when I write a 0x5678 to 0x04000000 address, I can only read 0x78, and the high 8bits are zero.

Is there some software configuration I forget? Is there something I should concern about the hardware design?

My board is a custom DM368 design, A fpga is connected to DM368 with EMIF, the CE1 is used for them.

I am appraciating for anyone's advice?