18939630. Voltage Domain GPIO Control (Apple Inc.)

Voltage Domain GPIO Control

Organization Name

Apple Inc.

Inventor(s)

Sharon D. Mutchnik of Cupretino CA (US)

Voltage Domain GPIO Control

This abstract first appeared for US patent application 18939630 titled 'Voltage Domain GPIO Control

Original Abstract Submitted

An integrated circuit (IC) includes an Input/Output (I/O) interface, first-domain circuitry and second-domain circuitry. The I/O interface is coupled to a first voltage domain and is configurable by a set of control bits. The second-domain circuitry is coupled to a second voltage domain and is configured to generate a bit value for a control bit among the control bits, to generate a multi-bit identifier (ID) of the control bit, and to transmit the bit value and the multi-bit ID. The first-domain circuitry is coupled to the first voltage domain and is configured to receive the bit value and the multi-bit ID, to identify the control bit from the multi-bit ID, and to configure the control bit of the I/O interface with the bit value.