TMS320DM8148: Connecting to NOR Flash to DM8148

Hi user508578027 ,

The query has been forwarded to respective team member.

Regards,
Prashant
Pathpartner Technology Pvt. Ltd.

Hi,

You can refer to EVM schematics for reference. You need to download both base board and expansion board as NOR is in expansion board.

Hi
I compared the address bus connection between my design to the EVB:
A1-A19, 24, 25: Same, MUX1 (Except A16-19 which no MUX mentioned)
A20, 21 , 23: My board MUX1, EVB:MUX0
A22: My board MUX0, EVB: MUX0
A26: My board MUX0
So how the EVB can work properly when most of the pins it use belong to MUX1 and some have different value as they belong to MUX0?

Thanks

user508578027 said:

1. Do you have recommended Flash devices list? I use S29GL01GS10DHI010, is it O.K?

We do not have a list. You can use every NOR flash that is compatible with DM814x datasheet and ROM Code requirements.

user508578027 said:

2.Can you review the address connectivity at the attached design?

I think GPMC_A1-19 conform MUX1 at table 4.2.

But I don't see A20-23,26 connectivity for MUX1.

At the design I see GPMC_A22(DSP) is routed to AB27 which is GPMC_A22(DSP) at MUX0,  is it O.K?

DM814x ROM Code initializes only 13 GPMC address lines (gpmc_a0 - gpmc_a12) hence it can access only first 4KBytes of the NOR. Next GPMC address lines are configured by the u-boot code, check below wiki pages:

user508578027 said:

3. At the design BTMODE[4:0]=11011 (First is MUX0), but I think BTMODE[4:0] should be 10001 as first option is MUX1, yes?

If you custom board is designed for MUX1 w/WAIT mode (wait monitoring ON), then yes, you should use BTMODE[4:0] = 10001

Regards,
Pavel