Configurable GPIO Voltage

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Except for GPP_J, GPP_S, and GPD groups, all other GPIO groups support per-group configurable voltage as called out in the below table. The voltage of each GPIO group is selected by both connecting the corresponding GPIO power supply pin and setting the corresponding Group Voltage Select soft strap to the desired voltage (i.e. 3.3 V or 1.8 V).

Signal Coverage	Voltage Rail	Supported Voltages
All GPP_A signals	VCCPGPPA	1.8 V or 3.3 V
All GPP_B and GPP_C signals	VCCPGPPBC	1.8 V or 3.3 V
All GPP_D and GPP_R signals	VCCPGPPDR	1.8 V or 3.3 V
ALL GPP_E, GPP_F, GPP_H, GPP_K signals + SYS_RESET# and CL_RST#	VCCPGPPEFHK	1.8 V or 3.3 V
All GPP_I signals	VCCPGPPI	1.8 V or 3.3 V

Notes:

GPP_J and GPP_S groups support 1.8 V only.

GPD group supports 3.3 V only.

Interrupt / IRQ via GPIO Requirement

Functional Description Interrupt / IRQ via GPIO Requirement