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DM814x CAD symbols discrepancy?

K Md Feroz Irfan
Expert 7225 points
Other Parts Discussed in Thread: TMS320DM8148

Hi Champs,

Could you please comment on this apparent discrepancy?

 

With reference to the CAD symbol for DaVinci Media Processor(TMS320DM8148) available on http://webench.ti.com/cad/dlbxl.cgi/TI_BXL/TMS320DM8148_CYE_684.bxl , when the Pin-out on the symbol is referenced to that available in the respective datasheet, certain discrepancies have been discovered.  These discrepancies are consistent in the footprint also. Enlisted below are all of the mismatches found by us,

 

S. No.

Pin-out in datasheet

Pin-out in Symbol and Footprint

 

Pin Number

Pin Name

Pin Number

Pin Name
  1.  

K21

Physical Pin Doesn’t exist

K21

No Name, Physical Pin Exists
  1.  

J20

Physical Pin Doesn’t exist

J20

No Name, Physical Pin Exists
  1.  

K22

EMAC[0]_MRXDV/EMAC[1]_RGRXD[1]/GPMC_A[5]/SPI[2]_SCLK

K22

Physical Pin Doesn’t Exist
  1.  

J22

EMAC[0]_MTXD[6]/EMAC[1]_RGRXD[0]/EMAC[1]_RMTXD[0]/GPMC_A[13]/UART1_TXD

J22

Physical Pin Doesn’t Exist
  1.  

P26

GPMC_CS[3]#/VIN[1]B_CLK/SPI[2]_SCS[0]#/GP1[26]

P26

GPMC_CS[3]/VIN[1]B_CLK/SPI[2]_SCS[0]#/GP1[26]
  1.  

AD20

VIN[0]A_VSYNC/UART5_CTS#/GP2[4]

AD20

VIN[0]A_VSYNC/UART5_CTS/GP2[4]
  1.  

AC17

VIN[0]A_D[20]/CAM_D[12]/EMAC[1]_RMCRSDV/SPI[3]_SCS[0]#/GP0[14]

AC17

VIN[0]A_D[20]/CAM_D[12]/EMAC[1]_RMCRSDV/SPI[3]_SCS[0]/GP0[14]
  1.  

AA22

VOUT[1]_R_CR[0]/CAM_D[0]/GPMC_A[8]/UART4_RTS#/GP0[25]

AA22

VOUT[1]_R_CR[0]/CAM_D[0]/GPMC_A[8]/UART4_RTS/GP0[25]
  1.  

V28

GPMC_BE[1]#/GPMC_A[24]/EDMA_EVT1/TIM7_IO/GP1[30]

V28

GPMC_BE[1]/GPMC_A[24]/EDMA_EVT1/TIM7_IO/GP1[30]
  1.  

AF27

VOUT[1]_G_Y_YC[2]/GPMC_A[13]/VIN[1]A_D[21]/HDMI_SCL/SPI[2]_SCS[2]#/I2C[2]_SCL/GP3[20]

AF27

VOUT[1]_G_Y_YC[2]/GPMC_A[13]/VIN[1]A_D[21]/HDMI_SCL/SPI[2]_SCS[2]/I2C[2]_SCL/GP3[20]

 

 

It is further requested to check the files for errors apart from those which we could discover and have mentioned above, and intimate us about the changes made or part updated and available for download.

 

 Best Regards

Feroz

  • 0
    TI__Guru**** 170625 points

    Hi Feroz,

    K Md Feroz Irfan said:
    With reference to the CAD symbol for DaVinci Media Processor(TMS320DM8148) available on http://webench.ti.com/cad/dlbxl.cgi/TI_BXL/TMS320DM8148_CYE_684.bxl

    Is this the same CAD file as the one available from the official TI web site?

    http://www.ti.com/product/TMS320DM8148

    CAD/CAE Symbols  -> CAD File (.bxl) -> Download -> TMS320DM8148_CYE_684.bxl

    Best regards,
    Pavel

  • 0 in reply to Pavel Botev
    Prodigy 50 points

    Hi Feroz and Pavel

    Please refer to the CAD part available at the product page, it is still not updated yet. 

    So I don't think this query has been answered yet. Pavel, please look at the pinout in the datasheet and in the CAD symbol. The discrepancies still languish.

    Please refer to the attached image file

    I've just mentioned one example here, rest you can refer from the Feroz's post. Please reply asap, as our design is stuck because of this mismatch.

    With Regards

    Atin Jain

  • 0 in reply to Atin Jain
    TI__Guru**** 170625 points

    Hi Atin,

    Atin Jain said:
    So I don't think this query has been answered yet.

    No one closed this thread (marked as answered), we are still discussing. I have just asked Feroz if this is the same file. Now you confirm it is the same file, right?

    Atin Jain said:
    Pavel, please look at the pinout in the datasheet and in the CAD symbol. The discrepancies still languish.

    My opinion is that the DM814x datasheet is the correct source of information. You can have a look in the DM814x EVM (from Mistral) schematics. The DM814x EVM schematics are aligned with the DM814x datasheet. The DM814x EVM schematics can be downloaded from the Mistral website:

    http://www.mistralsolutions.com/pes-support/support-downloads/tmdxevm8148.html#

    I am also attaching the schematic: 7357.MS_TI_DM814x_BB_REVD_SCH.pdf

    You can also compare with our pinmux tool, available at:

    {EZSDK}/board-support/host-tools/pinmux_utils/

    I will try to find the CAD file owner and discuss all this with him.

    Regards,
    Pavel

  • 0 in reply to Pavel Botev
    TI__Guru**** 170625 points

    Feroz,

    Please have a look on the below E2E thread:

    https://e2e.ti.com/support/dsp/davinci_digital_media_processors/int-dm814x/f/720/p/259848/1037144.aspx#1037144

    You will find the new TM320DM8148_CYE_684.bxl that the vendor corrected. You can provide it to Atin.

    Regards,
    Pavel