TMS320F28379D: SCI/UART Communication Issue

Tool/software:

Hello everyone,

I am new to TI microcontrollers, and I was trying to figure out the SCI/UART communication. I programmed my TMS320F28379D using CCS. I am using SCIB Pin 18 and 19.
I have attached the code for your reference. The problem I am having is that when I check the waveform on oscilloscope, it looks correct, yet the 8 bit data gets split into two and shows two different values.
In this image I am transmitting 0xAA, yet on the oscilloscope two different data value is shown.
I tried the example code for SCI, but I was unable to get the desired output.
What is the problem here?

Thanks and regards,
Jidnyesh Jagtap

#include "driverlib.h"
#include "device.h"

void main(void)
{
    Device_init();
    Device_initGPIO();

    GPIO_setPinConfig(GPIO_18_SCITXDB); 
    GPIO_setPinConfig(GPIO_19_SCIRXDB); 

    GPIO_setDirectionMode(18, GPIO_DIR_MODE_OUT);
    GPIO_setDirectionMode(19, GPIO_DIR_MODE_IN);  

    GPIO_setPadConfig(18, GPIO_PIN_TYPE_STD);  
    GPIO_setPadConfig(19, GPIO_PIN_TYPE_STD);  

    GPIO_setPinConfig(GPIO_10_GPIO10); 
    GPIO_setDirectionMode(10, GPIO_DIR_MODE_OUT);
    GPIO_writePin(10, 0);

    SCI_performSoftwareReset(SCIB_BASE); 


    SCI_setConfig(SCIB_BASE, DEVICE_LSPCLK_FREQ, 9600,
                  (SCI_CONFIG_WLEN_8 | SCI_CONFIG_STOP_ONE | SCI_CONFIG_PAR_NONE)); 

    SCI_enableModule(SCIB_BASE);  
    SCI_enableFIFO(SCIB_BASE);   
    SCI_resetChannels(SCIB_BASE); 

    SCI_enableLoopback(SCIB_BASE);

    while (1)
    {
        GPIO_togglePin(10); 
        SCI_writeCharBlockingFIFO(SCIB_BASE, 0xAA); 
        DEVICE_DELAY_US(500000);
    }
}