MCF8315A: I2C doesn't work on my own board with MCF8315A

Hello,

I designed my own board with MCF8315A. I measured All values AVDD, DVDD,VCP, FB_BK and  SW_BK frequency -> 461 KHZ

But I2C doesn't work. Can you help me ? All signals have the same values than eval board except FB_BK = 5Volts.

Best regards

Franck