4.14 Sleep Mode - Rev D0

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This section applies to devices of revision D0 and later. For newer devices, see the section Sleep Mode - Rev C2.

The PHY provides an ultra-low power (typically less than 140 μW) sleep mode based on the OPEN Alliance TC10 specifications. In this mode, it will release the INH pin to allow shutdown of most external power supplies. Only the uninterrupted supply VDDAU remains active to monitor and react to user selectable wake events. After a wake event, INH is asserted and the remaining power supplies are re-enabled. Since the INH pin can control power supplies shared with other devices, this feature allows for an entire node to enter a low power state, and be awakened by external events.

This section will describe
  • how the INH pin can be used to control the shutdown of power supplies, including using a delay feature
  • how to select what events will wake the device from sleep
  • how to enter sleep mode
  • how the device will behave upon wake and what actions are required