TPS65910, TPS65910A, TPS65910A3, TPS659101, TPS659102, TPS659103
TPS659104, TPS659105, TPS659106, TPS659107, TPS659108, TPS659109
SWCS046N –MARCH 2010–REVISED APRIL 2012
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While the device is in SLEEP state, predefined resources are automatically set in their low-power mode or off.
Resources can be kept in their active mode: (full-load capability), programming the SLEEP_KEEP_LDO_ON and
the SLEEP_KEEP_RES_ON registers. These registers contain 1 bit per power resource. If the bit is set to 1,
then that resource stays in active mode when the device is in SLEEP state. 32KCLKOUT is also included in the
SLEEP_KEEP_RES_ON register and the 32-kHz clock output is maintained in SLEEP state if the corresponding
mask bit is set.
PWRHOLD
When none of the device power-on disable conditions are met, a rising edge of this signal causes an OFF-to-
ACTIVE state transition of the device and a falling edge causes a transition back to OFF state. Typically, this
signal is used to control the device in a slave configuration. It can be connected to the SYSEN output signal from
other TPS659xx devices, or the NRESPWRON signal of another TPS65910 device. This input signal is level
sensitive and no debouncing is applied.
A rising edge of PWRHOLD is highlighted though an associated interrupt.
BOOT0/BOOT1
These signals determine which processor the device is working with and hence which power-up sequence is
needed. See SWITCH-ON/-OFF SEQUENCES AND TIMING for more details. There is no debouncing on this
input signal.
NRESPWRON
This signal is used as the reset to the processor. It is held low until the ACTIVE state is reached. See POWER
CONTROL TIMING to get detailed timing.
CLK32KOUT
This signal is the output of the 32K oscillator, which can be enabled or not during the power-on sequence,
depending on the Boot mode. It can be enabled and disabled by register bit, during ACTIVE state of the device.
CLK32KOUT output can also be enabled or not during SLEEP state of the device depending on the
SLEEPMASK register programming.
PWRON
A falling edge on this signal causes after tdbPWRONF debouncing delay (defined in Figure 5 and Table 6) an OFF-
to-ACTIVE state or SLEEP-to-ACTIVE state transition of the device and makes the corresponding interrupt
(PWRON_IT) active. The PWRON input is connected to an external push-button. The built-in debouncing time
defines a minimum button press duration that is required for button press detection. Any button press duration
which is lower than this value is ignored, considered an accidental touch.
After an OFF-to-ACTIVE state transition, the PMIC maintains ACTIVE during tdOINT delay, if the button is
released. After this delay if none of the device enabling conditions is set by the processor supplied, the PMIC
automatically turns off. If the button is not released, the PMIC maintains ACTIVE up to tdPWRONLPTO, because
PWRON low is a device enabling condition. After a SLEEP-to-ACTIVE state transition, the PMIC maintains
ACTIVE as long as an interrupt is pending.
If the device is already in ACTIVE state, a PWRON low level makes the corresponding interrupt (PWRON_IT)
active.
When the PMIC is in ACTIVE mode, if the button is pressed for longer time than tdPWRONLP, the PMIC generates
the PWON_LP_IT interrupt. If the processor does not acknowledge the long press interrupt within a period of
tdPWRONLPTO – tdPWRONLP, the PMIC goes to OFF mode and shuts down the DCDCs and LDOs.
INT1
INT1 signal (default active low) warns the host processor of any event that occurred on the TPS65910 device.
The host processor can then poll the interrupt from the interrupt status register through I2C to identify the
interrupt source. A low level (default setting) indicates an active interrupt, highlighted in the INT_STS_REG
register. The polarity of INT1 can be set by programming the IT_POL control bit.
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TPS659105 TPS659106 TPS659107 TPS659108 TPS659109
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