Is flash enable required on the GPS? Reset?

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  • The FLASH_EN is only needed to Flash the GPS.
  • Reset is needed is you want to exit Flash mode without powering off the GPS. Otherwise not needed in normal operation
  • The ISM480 powers up in an off state. The On/Off pin needs to be toggled to turn ON the GPS.
  • Once the On/Off pin has been toggled you monitor Wake-up pin to change from low to high.
  • This indicates the GPS is running and data should start streaming out of the serial port.