Method and mechanism for checking integrity of byte enable signa

Details Method and mechanism for checking integrity of byte enable signa Method and mechanism for checking integrity of byte enable signa

1996-05-17

1998-11-10

Chung, Phung M.

Excavating

371 492, 371 491, G06F 1110, H03M 1300

Patent

active

058355111

ABSTRACT:
A device and method that enables fault detection of control lines without additional fault detection lines. Prior to the transfer of a group of data, a control line is used to select whether even or odd parity is used on the group of data. After the data transfer, the same control signal is used at the destination device to select the type of parity used to check the validity of the data. If an error occurs on the control line that causes the state of the control line to change, the destination device will use the a different type of parity (even or odd parity) to check the validity of the group of data, and an error will be detected. In this manner, an error on the control line can be detected without additional parity signals.

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