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AR# 19175

6.2 EDK - What are the SDA_T and SCL_T signals in the OPB-IIC core?



The OPB-IIC core documentation does not contain information regarding the use of the STA_T and the SCL_T signals. What are these signals used for?




The SDA_T and SCL_T signals are the 3-state enable signals that control the data direction for the SDA and SCL data busses within the OPB-IIC core.

The data sheet has been updated in Service Pack 2.

This problem is fixed in the latest 6.2 EDK Service Pack, available at:

The first service pack containing the fix is EDK 6.2 Service Pack 2.
AR# 19175
Date Created 09/03/2007
Last Updated 10/25/2011
Status Archive
Type General Article