Rambus Inc.
Calibration protocol for command and address bus voltage reference in low-swing single-ended signaling
Last updated:
Abstract:
A single-ended receiver is coupled to an input-output (I/O) pin of a command and address (CA) bus. The receiver is configurable with dual-mode I/O support to operate the CA bus in a low-swing mode and a high-swing mode. The receiver is configurable to receive a first command on the I/O pin while in the high-swing mode, initiate calibration of the slave device to operate in the low-swing mode in response to the first command, switch the slave device to operate in the low-swing mode while the CA bus remains active, and to receive a second command on the I/O pin while in the low-swing mode.
Status:
Grant
Type:
Utility
Filling date:
10 Dec 2019
Issue date:
28 Jun 2022