Mega64 Usart1 funktioniert nicht

#include <avr/io.h>

#define FOSC 16000000// Clock Speed

#define BAUD 9600

#define MYUBRR FOSC/16/BAUD-1

void USART_Init( unsigned int ubrr )

{

  /* Set baud rate */

  UBRR1H = (unsigned char)(ubrr>>8);

  UBRR1L = (unsigned char)ubrr;

  /* Enable receiver and transmitter */

  UCSR1B = (1<<RXEN1)|(1<<TXEN1);

  /* Set frame format: 8data, 2stop bit */

  UCSR1C = (1<<USBS1)|(3<<UCSZ10);

}

void USART_Transmit( unsigned char data )

{

  /* Wait for empty transmit buffer */

  while ( !( UCSR1A & (1<<UDRE1)) )

  ;

  /* Put data into buffer, sends the data */

  UDR1 = data;

}

void main( void )

{

  USART_Init ( MYUBRR );

    while(1)

    { 

    USART_Transmit('A');

    }

}