Infineon TRAVEO T2G family CYT4D Series - Page 17

Application Note 17 of 80 002-26071 Rev. *B
2021-09-07
Clock configuration setup in TRAVEO™ T2G family CYT4D series MCUs
Configuration of the clock resources
Code Listing 4 Cy_SysClk_EcoConfigureWithMinRneg() function
gtrim = Cy_SysClk_SelectEcoGtrim(gm_min);
if(gtrim == CY_SYSCLK_INVALID_TRIM_VALUE)
{
return(CY_SYSCLK_BAD_PARAM);
}
rtrim = Cy_SysClk_SelectEcoRtrim(freqMHz);
if(rtrim == CY_SYSCLK_INVALID_TRIM_VALUE)
{
return(CY_SYSCLK_BAD_PARAM);
}
ftrim = Cy_SysClk_SelectEcoFtrim(atrim);
/* update all fields of trim control register with one write, without changing the ITRIM field: */
un_CLK_ECO_CONFIG2_t tempTrimEcoCtlReg;
tempTrimEcoCtlReg.u32Register = SRSS->unCLK_ECO_CONFIG2.u32Register;
tempTrimEcoCtlReg.stcField.u3WDTRIM = wdtrim;
tempTrimEcoCtlReg.stcField.u4ATRIM = atrim;
tempTrimEcoCtlReg.stcField.u2FTRIM = ftrim;
tempTrimEcoCtlReg.stcField.u2RTRIM = rtrim;
tempTrimEcoCtlReg.stcField.u3GTRIM = gtrim;
SRSS->unCLK_ECO_CONFIG2.u32Register = tempTrimEcoCtlReg.u32Register;
SRSS->unCLK_ECO_CONFIG.stcField.u1AGC_EN = agcen;
return(CY_SYSCLK_SUCCESS);
}
Code Listing 5 Cy_SysClk_SelectEcoAtrim () function
__STATIC_INLINE uint32_t Cy_SysClk_SelectEcoAtrim(float32_t maxAmplitude)
{
if((0.50f <= maxAmplitude) && (maxAmplitude < 0.55f))
{
return(0x04ul);
}
else if(maxAmplitude < 0.60f)
{
return(0x05ul);
}
else if(maxAmplitude < 0.65f)
{
return(0x06ul);
}
else if(maxAmplitude < 0.70f)
{
return(0x07ul);
}
else if(maxAmplitude < 0.75f)
{
return(0x08ul);
}
else if(maxAmplitude < 0.80f)
{
return(0x09ul);
}
else if(maxAmplitude < 0.85f)
{
return(0x0Aul);
}
else if(maxAmplitude < 0.90f)
{
return(0x0Bul);
}
else if(maxAmplitude < 0.95f)
{
return(0x0Cul);
}
else if(maxAmplitude < 1.00f)
{
return(0x0Dul);
}
else if(maxAmplitude < 1.05f)
{
return(0x0Eul);
}
else if(maxAmplitude < 1.10f)
{
return(0x0Ful);
}
else if(1.1f <= maxAmplitude)
{
Get the Gtrim value. See Code Listing 8.
Get then Rtrim value. See Code Listing 9.
Get the Ftrim value. See Code Listing 10.
Get the Atrim value.