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What AM37x chip is used on the Mistral AM37x EVM?

John J Wu
Genius 3870 points
Other Parts Discussed in Thread: DM3730, AM3703, AM3715

The value of register 0x4800244C is 0x0C00 and based on table 1-6 chip identification, the processor is DM3730. But from the other hand The value of CONTROL_IDCODE register is 0x2B89102F and as bit 12 is “1”, it means that the processor is either AM3715 or AM3703.

Also the bit 11:10 reading is “00”, which doesn’t match with any of the values of the table 1-6.

However the assembly instruction list of the attached BOM is also confusing:

Assembly Instruction List

1

Peel of the sticky tape on SW1 after assembly, so that user can flip switches easily

2

This board is assembled with OMAP3730. Make sure the Assembly & Serial No. Labels read out correct Numbers.

3

For line item #25 we have to use ES1.2 XAM3703BCBP for AM3715 build ; XDM3730BCBP should be used for 3730 builds

By the way do you think our Mistral Eval board has the TI DSP processor DM3730? I believe the Beagleboard has it.

Thanks,

John

  • 0
    TI__Intellectual 1295 points

    John,

    I need to confirm with HWApps but we typically push superset silicon on the EVM platforms to avoid the logistic issues of maintaining separate EVM stock based on populated SoC.  So the Mistral 37x EVM should be a DM3730.  You'll find this to be generally be true across other TI EVMs as well.  

  • 0 in reply to Kevin Selva Prasanna V
    TI__Guru* 86180 points

    John, you are mixing up 2 different registers.  Table 1-6 defines the Device Status register, which is different from the IDCODE register (Table 1-7) which just represents silicon revision, which in your case is ES1.2.

    Regards,

    James

  • 0 in reply to JJD
    TI__Prodigy 685 points

    More feedback:

    I still have some doubts with Table 1-6. I parsed chip ID 0x2B89102F based on Table -16.

    The low 16 bits of chip ID is 0b0001000000101111 (0x102F) which means the following:

    Scalable Resource            Bit           Value

    SGX                                        14:13,    00

    IVA                                         12,          1

    MPU L2                                11:10     00

    Speed                                   9              0

    Reserved                             8:4          00010

    Feat_Tiering                       3:0          1111

     

    SGX tells us that the processor is either DM3730 or AM3715. IVA is 1 which means the processor is AM3715. We know that the device on the EVM is actually DM3730 but it doesn’t match the explanation on Table 1-6. Can you help me figure out this?