Msp430 Launchpad UART

According to the official workshop, the Serial Communication session(Lab 7), the all functions that related to UART transmission are shown below. There are anything but the configuration codes of USCI or USART registers.Aren't the USART and USCI components necessary in UART transimission?

// Function Transmits Character from TXByte
void Transmit()
{
  BitCnt = 0xA;                     		// Load Bit counter, 8data + ST/SP
  while (CCR0 != TAR)               		// Prevent async capture
    CCR0 = TAR;                     		// Current state of TA counter
  CCR0 += Bitime;                   		// Some time till first bit
  TXByte |= 0x100;                  		// Add mark stop bit to TXByte
  TXByte = TXByte << 1;             		// Add space start bit
  CCTL0 =  CCIS0 + OUTMOD0 + CCIE;  		// TXD = mark = idle
  while ( CCTL0 & CCIE );           		// Wait for TX completion
}

// Timer A0 interrupt service routine
#pragma vector=TIMER0_A0_VECTOR
__interrupt void Timer_A (void)
{
  CCR0 += Bitime;                   		// Add Offset to CCR0
  if (CCTL0 & CCIS0)                		// TX on CCI0B?
  {
    if ( BitCnt == 0)
    {
      CCTL0 &= ~ CCIE ;             		// All bits TXed, disable interrupt
    }

    else
    {
      CCTL0 |=  OUTMOD2;            // TX Space
      if (TXByte & 0x01)
      CCTL0 &= ~ OUTMOD2;           // TX Mark
      TXByte = TXByte >> 1;
      BitCnt --;
    }
  }
}