TMDSEVM6678: Delay in DSP board connection

Liu Yang

Part Number: TMDSEVM6678

Hi Team,

Using the DSP board and the AD/DA conversion board to make feedback control with the least delay,
how to connect and operate the two boards?

The customer has posted a similar question before:
e2e.ti.com/.../918600

Beat Regards,
Tom Liu

over 3 years ago

0 lding over 3 years ago

TI__Guru* 95265 points

Hi,

A/D data can be connected through EMIF or SPI interface. Customer mentioned PCIE interface, it should also work. Connection depends on it is customer' own board or TI EVM. If it is TI EVM, please refer to https://www2.advantech.com/Support/TI-EVM/6678le_of.aspx EVM user guide how this is connected. For the software, TI driver user guide is available under: http://software-dl.ti.com/processor-sdk-rtos/esd/docs/latest/rtos/Device_Drivers.html

Regards, Eric

0 Liu Yang over 3 years ago in reply to lding

TI__Expert 5915 points

Hi Eric,

We are currently thinking about connecting through a PCIE interface, but if we use an AMC-PCIe adapter card, how much will the data transfer rate slow down due to the PCIE interface connection? In the document you provided, it is stated that the PCIE interface can transfer data at a speed of 5.0 Gbps. Is it OK to consider it as a speed considering the connection of the adapter? I am asking a question here because I am thinking of using the connection method with the fastest data transfer rate.

Beat Regards,
Tom Liu

0 lding over 3 years ago in reply to Liu Yang

TI__Guru* 95265 points

Hi Tom,

The AMC-PCIe adapter card for connection will not slow down your PCIE speed. We have bench-marking of PCIE here (see chapter 12 of the attached doc). This should be far enough for A/D, D/A usage.2021.sprabk5a_throughput.pdf

Regards, Eric

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TMDSEVM6678: Delay in DSP board connection