ISL12026的问题

ccb bcc

我们公司做了一块5509开发板，板上有AIC23音频接口，用到了I2C，还接了一个时钟芯片。
型号是ISL12026，也是I2C接口的。
现在音频模块调好了，可以正常工作。
时钟程序运行时，用示波器测，SDA和SCL上都没有波形。
请高手指教，如何解决？谢谢！
附程序：
/* This next struct shows how to use the I2C API */
/* Create and initialize an I2C initialization structure */
I2C_Setup I2Cinit = {
      0,             /* 7 bit address mode */
      0,       /* own address - don't care if master */
      84,          /* clkout value (Mhz)  */
      50,          /* a number between 10 and 400*/
      0,             /* number of bits/byte to be received or transmitted (8)*/
      0,             /* DLB mode on*/
      1             /* FREE mode of operation on*/
};

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/*I2C is undet reset*/
I2C_RSET(I2CMDR,0);
/*设置预分频寄存器,I2C的mode clock is 10MHz*/
delay(100);
I2C_RSET(I2CSAR,0x001A);
I2C_RSET(I2CMDR,0x0620);
I2C_FSET(I2CSTR,BB,0x1); /* Writing a 1 to BB Bus busy bit is supposed to clear it*/
I2C_setup(&I2Cinit);
//myI2C_setup(&I2Cinit);
    /*设置Ｉ２Ｃ的Mater clock*/
I2C_RSET(I2CCLKL,100);
I2C_RSET(I2CCLKH,100);

I2C_getConfig(&testI2C);

/*初始化McBSP0*/
hMcbsp = MCBSP_open(MCBSP_PORT0,MCBSP_OPEN_RESET);
/*设置McBSP0*/
MCBSP_config(hMcbsp,&Mcbsp1Config);
/*启动McBSP0*/
MCBSP_start(hMcbsp,
            MCBSP_RCV_START | MCBSP_XMIT_START,
            0);

MCBSP_getConfig(hMcbsp,&Mcbsptest);

。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
buffer1[0]=0x55;
      i2c_status = I2C_write( buffer1,       //pointer to data array
                          1, //length of data to be transmitted
                          1, //master or slaver
                          Y2K,       //slave address to transmit to
                          1, //transfer mode of operation
                          30000 //time out for bus busy
                    );
//temp=I2C_read ( buffer2, 1, 1,PWR, 1, 30000, checkbus);
for(i=0;i<3000;i++);