如下图，从AFE4404输出的PPG波形存在异常的突起波形现象，请问如何解决？
配置是500HZ采样率，寄存器设置如下:
led2_start_end( 0, 399 );
led2_sample_start_end( 80, 399 );
adc_reset0_start_end( 401, 407 );
led2_convert_start_end( 408, 1467 );
led3_start_stop( 400, 799 );
led3_sample_start_end( 480, 799 );
adc_reset1_start_end( 1469, 1475 );
led3_convert_start_end( 1476, 2535 );
led1_start_end( 800, 1199 );
led1_sample_start_end( 880, 1199 );
adc_reset2_start_end( 2537, 2543 );
led1_convert_start_end( 2544, 3603 );
amb1_sample_start_end( 1279, 1598 );
adc_reset3_start_end( 3605, 3611 );
amb1_convert_start_end( 3612, 4671 );
pdn_cycle_start_end( 5471, 7839 );
prpct_count( 7999 );
timer_and_average_num( true, 1 );
seperate_tia_gain( true, 0, 4 );
tia_gain( false, 0, 3 );
led_currents( 15,3,3 );
dynamic_settings( dyn_modes );
clkout_div( false, 2 );
int_clk_div( 1 );
