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MSP430F249-EP: i2c communication influence by unexpected spikes suppressed

Part Number: MSP430F249-EP

I am using i2c of msp430f249ep to communication in my program,but my data i want transmit was out of order in the receiver,when i grasped waveform,i found there is spikes suppressed occured when i transmit data,it’s level is 2.3V,and where there is spikes suppressed occured,there it is be thought a start signal occured,the data is retry transmit,is it so-called tSP where i found at page 51 in manual?how it could be solved?