Is the calibration current documented anywhere ?? We see periodic ~20ms 600mA calibration current for BCM43353 and BCM4343W. Does not
seem to be documented in the chipset datasheet ...
600mA for 20ms is a problem for USB powered devices (500mA power limit).
Do all Cypress chipsets require this type of calibration current ??
Yes, all cypress chipsets have a requirement of this type of calibration current.