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TMS320F28069: FPUTABLES and IQTABLE location on ROM

Howard Zou
Genius 12365 points
Part Number: TMS320F28069
Other Parts Discussed in Thread: C2000WARE

Hi,

in our example code,

C:\ti\c2000\C2000Ware_2_01_00_00\device_support\f2806x\examples\c28\flash_f28069

in the cmd file F28069.CMD:

FPUTABLES : origin = 0x3FD590, length = 0x0006A0 /* FPU Tables in Boot ROM */
IQTABLES : origin = 0x3FDF00, length = 0x000B50 /* IQ Math Tables in Boot ROM */
IQTABLES2 : origin = 0x3FEA50, length = 0x00008C /* IQ Math Tables in Boot ROM */
IQTABLES3 : origin = 0x3FEADC, length = 0x0000AA /* IQ Math Tables in Boot ROM */

The memory address is different from TRM

FPUTABLES should start from 0x3F D860, and the same problem for IQTABLES.

We are using Non-M or F version, I want to confirm that TRM is correct, right?

  • 0
    TI__Mastermind 25090 points

    Howard,

    I agree, there appears to be a disparity between the FPUTABLES origin in F28069.cmd and Figure 2.1 of http://www.ti.com/lit/ug/spruh18h/spruh18h.pdf

    Everything else appears to be OK. Please see the attached picture.

    So the question now is whether the .cmd file is wrong or is the TRM wrong. The length of FPUTABLES is 6a0, so it seems to me like the .cmd is wrong. It should be changed from 0x3FD 590 to 0x3FD 860.

    Is this causing issues at an application level for you? If yes, can you try the fix and see if it solves the problem?

    I will internally file a JIRA ticket to address it.

    Thanks,

    Sira