ADS1292R读出来的寄存器状态位是错的，为什么？

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[*]我现在在用ADS1292R，用的内部晶振，单片机用的是f149,现在的问题是读出来的寄存器状态位是错的，下面是我的程序。

#include
char MST_Data = 0xAA,SLV_Data = 0xff;
unsigned char a[12];
unsigned char b[12];
#define SPI_ENABLE P2OUT &=~0x08;
#define SPI_DISABLE P2OUT |=0x08;
unsigned char regdata[11]={0x02,0xeb,0x18,0x00,0x00,0x30,0x0f,0x40,0x02,0x01,0x03};//二通道心电测试信号，无呼吸
void Stop_Read_Data_Continuous (void)
{
unsigned int i=0;
SPI_ENABLE; // /CS enable
//for(i=0;i<10;i++);
//while (!(IFG1&URXIFG0)); // Clear flag
TXBUF1 =0x11; // Send SDATAC
while (!(IFG2&UTXIFG1)); // Wait for TXBUF ready
// UCA0IFG &= ~(UCRXIFG+UCTXIFG); // Clear flag 可能自动复位（zhao）
SPI_DISABLE; // /CS disable
for(i=0;i<10;i++);
}
void Start_Read_Data_Continuous (void)
{
unsigned int i=0;
SPI_ENABLE;
// while (!(IFG1&URXIFG0)); // Clear flag
TXBUF1 =0x10; // Send RDATAC
while (!(IFG2&UTXIFG1)); // Wait for TXBUF ready
// UCA0IFG &= ~(UCRXIFG+UCTXIFG); // Clear flag
// UCA0IFG &= ~UCRXIFG; // Clear flag
SPI_DISABLE;
for(i=0;i<10;i++);
}
void SPI_RegRead(unsigned char addr, unsigned char *buffer, unsigned char count)
{
unsigned int i=0,j=0;

//P1OUT |=BIT1;
//退出连续读数模式
Stop_Read_Data_Continuous (); //When in RDATAC mode, the RREG command is ignored.Send SDATAC MUST BE SENT
//for(i=0;i<50;i++);

SPI_ENABLE; // /CS enable

TXBUF1 =addr+0x20; // Send address

while ((IFG2 & UTXIFG1) == 0); // USART0 TX buffer ready?
// UCA0IFG &= ~(IFG+UCTXIFG); // Clear flag
TXBUF1 = count-1; // regedit count ge shu
while (!(IFG2&UTXIFG1)); // Wait for TXBUF ready
// UCA0IFG &= ~(UCRXIFG+UCTXIFG); // Clear flag

for (i = 0; i