Receiving an i/o signal in multiple voltage domains

Abstract

Embodiments disclosed herein include an I/O module with multiple level shifters that establish a plurality of voltage domains. Using the level shifters, the I/O module converts data signals in a core logic voltage domain to data signals in an external voltage domain. In one embodiment, when transmitting data signals to an external device, the I/O module level shifts the data signals from a core logic voltage domain to a low voltage domain. The I/O module then level shifts the data signals from the low voltage domain to an intermediate voltage domain. The I/O module may further shift the data signals from the intermediate voltage domain to both a low voltage domain and a high voltage domain. Using the data signals from both of these domains, the I/O module outputs the data signals in a voltage domain corresponding to a communication technique used to transmit data to the external device.

Dependencies are inferred from the claim text.