read_startup_regs command should be issued<br>1: HSDIV_STRP, N1_STRP and RFREQ_STRP are updated and valid</dd>
  <dt><b>cfg_in_sync</b> [<i>ro</i>]</dt>
  <dd>Registers synchronization status<br><br>0: Registers HSDIV, N1 and RFREQ values are not in sync with the internal Si57x registers<br>1: Registers HSDIV, N1 and RFREQ values are in sync with the internal Si57x registers</dd>
  <dt><b>i2c_err</b> [<i>ro</i>]</dt>
  <dd>I2C error status<br><br>0: No errors<br>1: An I2C error occured (no response from sla