Patent ID: 7565469
Filing Date: 2009-07-21
Classification: G06F,G11C

Abstract:
1. A method comprising: driving information comprising a first information portion and a second information portion from a first unit to a second unit over a bus having a signal line by: driving the first information portion from the first unit to the second unit over the signal line during a command execution; driving the signal line from the second unit to cause a change of state during the command execution; interpreting the change of state of the signal line at the first unit to have a first meaning and in response driving the second information portion to the signal line from the first unit during the command execution; driving the signal line from the second unit to cause again the change of state during the command execution; and interpreting at the first unit the change of state of the signal line occurring after driving the second information portion to the signal line to have a second meaning different from the first meaning.