CCS/TMS320F28377D: TMS320F28377D and SRAM 2M - Problem with connection

Hi,

The attachment did not come correctly in your post so we can not see the schematic.

1. How can I correct connect SRAM memory to MCU when I have in memory signals of Address A0..A20? In Reference manual MCU I read that signal Addres A0 must be connect to EM1BA1 MCU pin - this is correct route?

That is correct for 16bit memory device.

2. How can I connect UB and LB signals of SRAM memory to MCU ?- This signals should be connect to MCU pins: EMI1DQM0 and EMIDQM1? - This is correct information? I connected  this signals to typical GPIO because I use pins EMI1DQM0 and EMIDQM1 as address EMI1A15 and EMI1A16.

That is ok. Please note that C28x is 16bit processor so minimum access size is 16bit so you could tie the UB and LB pins of memory to active value on board hence don't have to use GPIO pins.

Also please note that BA1 is muxed with A19 so available address range is BA1, A0..A18 only which gives access to 1M x16 (2MB) memory size only.

Regards,

Vivek Singh

Hello,

 Thank You Vivek Singh, for Your reply.  I try send my schematic sheet. The SRAM schematic sheet:

The MCU schematic sheet:

Please look on my MCU sheet - Please Can You check my connection SRAM memory to MCU?

Thank You.