Clock: Description and Operation

Clock

The clock is an integral part of the audio head unit.

The IHU contains the master clock functionality. The IHU contains and displays the clock in one unit. Other vehicle modules that require clock functionality use the time supplied from the IHU.

The clock is available to any control module that is connected to an interconnecting bus i.e. either of the CAN (controller area network) busses or the MOST ring.

The clock display configurable to show in AM / PM or 24 hour format. Midnight is shown as 12:00AM or 0:00 respectively. The default condition, if not specified, after power on or delivery, should default to 1:00PM or 13:00. Depending upon the market set the clock will default to either 12 or 24 hour format.

The time is adjusted from the IHU. Under conditions when any bus could be asleep or shut down, the HMI does not allow clock adjustments.