ZHCS688I November 2011 – March 2018 TPS65217
PRODUCTION DATA.
STROBE 14 and STROBE 15 are not assigned to the sequencer but used to control rails that are always-on, that is, are powered up as soon as the device goes out of the OFF state and stay ON in the SLEEP state. STROBE 14 and STROBE 15 options are available only for the LDO1 and LDO2 rails and not for any of the other rails.
STROBE 15 occurs as soon as the push-button is pressed or the USB or AC adaptor is connected to the device. STROBE 14 occurs after a delay time of DLY6. The LDO1 and LDO2 rails can be assigned to either strobe but by default only LDO1 is assigned to special STROBE 15 (default settings must be programmed by TI at the factory because all registers are reset during transitions to the OFF or SLEEP states).
When a power-down sequence is initiated, STROBE 15 and STROBE 14 occur only if the OFF bit is set. Otherwise both strobes are omitted, and the LDO1 and LDO2 rails keep their state.