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external SRRAM memory calculation for ECU

Ajay Kumar55
Prodigy 200 points

Other Parts Discussed in Thread: TMS320VC5501

Hi,

Please help me to calculate the external SDRAM memory required for 24 channel Echo cancellation in TMS320VC5501 device. if I am running SDRAM at 100 MHz, please let me know the data width required for same.

  • 0
    TI__Mastermind 30571 points

    Depends on the software and configuration for echo cancellation. Then multiply the mem requirements (accounting for alignment) by 24-channels.

    Perhaps you can look at a existing software for one channel echo cancellation to estimate the mem requirements per channel (check .map file).

    http://www.ti.com/tool/telecomlib

    C5501 has 4 chip selects each addressable ~4Mbytes (32-bit). SDRAM can support upto 32-bit data.

    Hope this helps,
    Mark