Problems using McBSP-B

Hi everybody,

I have a project where I am using both McBSP-A and B for SPI communications.  The McBSP-A SPI config is working perfectly fine but the B port is not!  The code I am using for the B is very similar to A except for data rates and word sizes.  This is the code:

void initB_GPIO()
{
     EALLOW;
    GpioCtrlRegs.GPAMUX2.bit.GPIO24 = 3;    // GPIO24 = MDXB
    GpioCtrlRegs.GPAMUX2.bit.GPIO25 = 3;    // GPIO25 = MDRB
    GpioCtrlRegs.GPAMUX2.bit.GPIO26 = 3;    // GPIO26 = MCLKXB

    GpioCtrlRegs.GPAPUD.bit.GPIO24 = 0;     // Enable pull-up

    GpioCtrlRegs.GPAPUD.bit.GPIO25 = 0;     // Enable pull-up
    GpioCtrlRegs.GPAQSEL2.bit.GPIO25 = 3;   // Asynch input GPIO25 (MDRB)

    GpioCtrlRegs.GPAPUD.bit.GPIO26 = 0;     // Enable pull-up
    GpioCtrlRegs.GPAQSEL2.bit.GPIO26 = 3;   // Asynch input GPIO26 (MCLKXB)

}

void initB_SPI(void)        // (McBSP-B)
{
    McbspbRegs.SPCR2.all=0x0000;        // Reset FS generator, sample rate generator & transmitter
    McbspbRegs.SPCR1.all=0x0000;        // Reset Receiver, Right justify word, Digital loopback dis.
    McbspbRegs.PCR.all=0x0F08;          // (CLKXM=CLKRM=FSXM=FSRM= 1, FSXP = 1)
    McbspbRegs.SPCR1.bit.DLB = 1;
    McbspbRegs.SPCR1.bit.CLKSTP = 3;   
    McbspbRegs.PCR.bit.CLKXP = 0;       
    McbspbRegs.PCR.bit.CLKRP = 1;
    McbspbRegs.RCR2.bit.RDATDLY = 1;     // FSX setup time 1 in master mode. 0 for slave mode (Receive)
    McbspbRegs.XCR2.bit.XDATDLY = 1;     // FSX setup time 1 in master mode. 0 for slave mode (Transmit)

    McbspbRegs.RCR1.bit.RWDLEN1 = 2;        // 16-bit word
    McbspbRegs.XCR1.bit.XWDLEN1 = 2;        // 16-bit word

    McbspbRegs.SRGR2.all = 0x2000;        // CLKSM=1, FPER = 1 CLKG periods
    McbspbRegs.SRGR1.bit.FWID = 0;        // Frame Width = 1 CLKG period
    McbspbRegs.SRGR1.bit.CLKGDV = 18;    // CLKG frequency = LSPCLK/(CLKGDV+1)

    McbspbRegs.SPCR2.bit.GRST = 1;        // Enable the sample rate generator
    delay_loop();                        // Wait at least 2 SRG clock cycles
    McbspbRegs.SPCR2.bit.XRST = 1;        // Release TX from Reset
    McbspbRegs.SPCR1.bit.RRST = 1;        // Release RX from Reset
    McbspbRegs.SPCR2.bit.FRST = 1;        // Frame Sync Generator reset */
}

...

then I just call it like this ->

    while( McbspbRegs.SPCR2.bit.XRDY == 0 ) {}    // wait for any previous SPI transactions to clear
    McbspbRegs.DXR1.all = dat;

What I get is the data coming out correct but the clk goes high during the transmission (no toggle).  It almost looks like the clk pin is acting like the frame sync pin.

Please help

Thanks,

HC