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Compiler/AWR1642: question about RampEndTime setting

Part Number: AWR1642

Tool/software: TI C/C++ Compiler

hi

 i need a fast chirp with low bandwidth , so i set the parameter of profile as below

profileCfg.idleTimeConst = (uint32_t)((float) 2 * 1000 / 10) ; //2us

profileCfg.adcStartTimeConst = (uint32_t)((float) 3 * 1000 / 10) ; //3us

profileCfg.ranmpEndTime = (uint32_t)((float) 11 * 1000 / 10) ; //11us

profileCfg.numAdcSamples = 32;

profileCfg.digOutSampleRate= 6250;

no matter what i have do ,the error of MMWDEMO_BSS_CPUFAULT_EVT will happend when the ranmpEndTime + idleTimeConst less than 13 us.

please help me to check why is would happen?

i wish to reduce the rampEndTime to 8us and adcStartTimeConst to 1us ; finally the hole chirp time will be the 11us. Can it be ?

the sdk version is : mmwave_sdk_01_01_00_02;

br

havi