Question from an internal forum:
Q: could someone help me understand how the TPS65950 signals
LEDSYNC LED synchronization input
are used in a real system? On a high-level is sounds to me that OMAP GPIO pins can be hooked up to these pins to control the turning on/off of the Vibrator drivers and the LED drivers respectively. Could someone shine some light on this?
A: LEDSYNC is used to have external control of the LED drivers. If you look at the two PWMs in the TRM you will see that these can be controlled independently using the registers. In case the user wants to use the external LEDs in sync and need a common control then he can use LEDSYNC, it can take input from OMAP GPIO or some other input. This will enable a common control logic for the external LEDs.
Similar explanation for VIBRA.SYNC. In case you are using VAUX1.OUT and need control (to turn OFF and ON) using some external signal then you can use VIBRA.SYNC. The PWM and register control for VAUX1 doesn’t allow external control logic.