AS3715 datasheet(67/159 Pages) AMSOSRAM

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[v1-03] 2015-Aug-10

AS3715 − Detailed Description – System Functions

Figure 69:

GPIO Block Diagram

GPIO Block Diagram: Shows the internal structure of the IO pads.

IO Functions

Normal IO Operation

If set to input, the logic level of the signal present at the GPIOx

pin can be read from gpioX_in. If the output mode is chosen,

gpioX_out specifies the logic level of the GPIOx pin.

This mode is also used for the ON/OFF control of the DCDC and

LDOs. The selection which regulator is controlled by which

GPIO, is done with the gpio_ctrl_sdX or gpio_ctrl_ldoX bits. The

gpioX_mode should be set to input.

Interrupt Output

GPIOx pin logic state is derived from the interrupt signal INT.

Whenever an interrupt is present, the GPIOx pin is pulled high.

The gpioX_mode should be set to output.

VSUP_low Output

GPIOx pin will go high if VSUP falls below ResVoltFall and

SupResEn = 0. The gpioX_mode should be set to output.

GPIO Interrupt Input

A falling or rising edge will set the gpio_int bit. The gpioX_mode

should be set to input.

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