High Speed Serial IO - Signal Loss Condition Resolution at the Bit Level

For error detection I will be transmitting out a known bit sequence and the receive will know what to expect. I can use that to check for errors. But what I need to be able to do is receive a parital word in the event of an error so that I will know when the error occurred in my bit sequence down the the bit level not just the word level. Is that possible? Can you read a partial word with the receiver?