Part Number: TMS320C6657 Tool/software: Hi All, Currently, the response time of interrupts varies from 0.25ns to 2us. Response time: Time from external interrupt (GPIO pin) input to start of interrupt routine. We expect an immediate response from an external interrupt input, but sometimes there is a delay of up to 2 us (1800 cycles). What is the cause of the variation in response time and how can it be improved? Device: TMS320C6657 Operating frequency: 900MHz External interrupt input: GPIO13 Application software and variables are operated by L2SRAM inside the DSP. L1D/L1P is set to 32kB cache. Best Regards, Ito
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