config MCU as I2C slave and it cannot send data

void I2CA_Init(void)
{
  


  
  	EALLOW;
  
	//
	// �Լ��ĵ�ַ
	//
	I2caRegs.I2COAR = 0x0001;    

	//
	// Slave address - EEPROM control code
	// ��EEPROM���ݱ�����ʾ����0xA0��Ҫ�Ѷ�дλȥ���������1λ
	//
	//I2caRegs.I2CSAR = 0x0050;        
	
	//
	// I2CCLK = SYSCLK/(I2CPSC+1)
	// I2Cϵͳʱ�ӵ�����Ƶ�� = 40MHz / (3 + 1)
	//
	I2caRegs.I2CPSC.all = 3;       	// Prescaler - need 7-12 Mhz on module clk

	
	//
	// ����SCLʱ�Ӹߵ͵�ƽ��ռ�ձ�
	//	
	I2caRegs.I2CCLKL = 495;         // NOTE: must be non zero��ʱ�ӵĵ͵�ƽռ����
	I2caRegs.I2CCLKH = 495;         // NOTE: must be non zero��ʱ�ӵĸߵ�ƽռ����
	
	//
	// �����жϷ�ʽ
	//		
	//I2caRegs.I2CIER.all = 0x24;     // Enable SCD & ARDY interrupts
	I2caRegs.I2CIER.bit.SCD = 1;
	I2caRegs.I2CIER.bit.XRDY = 1;
	I2caRegs.I2CIER.bit.RRDY = 1;
	I2caRegs.I2CIER.bit.ARDY = 1;
	
	I2caRegs.I2CIER.bit.AAS = 1;

	I2caRegs.I2CMDR.all = 0x0020;   
	                            	
	
	//I2caRegs.I2CEMDR.all = 0;
	
	//
	// GPIO����
	//
    	//GpioCtrlRegs.GPBQSEL1.bit.GPIO32 = 3;  // Asynch input GPIO32 (SDAA)
  	//GpioCtrlRegs.GPBQSEL1.bit.GPIO33 = 3;  // Asynch input GPIO33 (SCLA)	
	
	GpioCtrlRegs.GPBMUX1.bit.GPIO32 = 1;	// I2CSDA	
	GpioCtrlRegs.GPBMUX1.bit.GPIO33 = 1;	// I2CSCL

	
	PieVectTable.I2CINT1A = &I2CIsr;

	// Enable interrupts required for this example	
	// Enable I2C interrupt 1 in the PIE: Group 8 interrupt 1
	PieCtrlRegs.PIEIER8.bit.INTx1 = 1;
	
	// Enable CPU INT8 which is connected to PIE group 8
	IER |= M_INT8;

	EDIS;
	
	


}




interrupt void I2CIsr(void)     // I2C-A
{


	Uint16 IntSource = 0;

	//
	// Read interrupt source
	//
	IntSource = I2caRegs.I2CISRC.all;
	
	if(IntSource == I2C_AAS_ISRC)
	{
	
	}
	else 	
	if(IntSource == I2C_TX_ISRC)	
	{

		I2caRegs.I2CDXR = 10;

	}
	else if(IntSource == I2C_RX_ISRC)	
	{

		
		CommSlave.Buffer[CommSlave.Unit.bit.RecvNum].bit.RecvBuf = I2caRegs.I2CDRR;	
		if(CommSlave.Unit.bit.RecvNum < sizeof(CommSlave.Buffer))
		{
			CommSlave.Unit.bit.RecvNum++;
		}		
		


		CommSlave.Unit.bit.RecvFlag = 1;
		CommSlave.Unit.bit.RecvCompleteTime = 0;		
		

	}
	


	

	PieCtrlRegs.PIEACK.all = PIEACK_GROUP8;
}