Due to the flexibility of the transmit buffer, it is possible for software to implement a simple ping-pong buffer, or to randomly load and send from any location of the buffer. If the buffer is used in this manner, error flags and status fields may be ignored without adversely affecting the transmitter capability. Additionally, the CURR_WORD_CNT will also be invalid if used in this way. The application can set the buffer pointer manually by writing the 4-bit index to TX_BUF_PTR_LOAD. This will force the transmitter to start picking the data from the indicated location in the buffe