Si4703 FM tuner and I2C

Hi ,

I'm trying to run a Si4703 FM eval board from Sparkfun on an 2553 (launchpad). The device work fine on Arduino. I'm using the sketch provided by Sparkfun (there).

I change pin assignment as

int resetPin = P1_4;
int SDIO = P1_7; //SDA/A4 on Arduino
int SCLK = P1_6; //SCL/A5 on Arduino

Add pull ups to SDA and SCLK but with no result the code loop on this line in si4703_readRegisters function

while(Wire.available() < 32) ;

available return only 16.

I'm new to SPI so don't know how to resolve this.

Thanks,