Control (PRN_CTRL)
Control (PRN_CTRL) is a variable to clear the Send Buffer and the Error Status. This variable is write-only.
When a word is selected, and two or more bits are set simultaneously, the processing is executed in the following order.
Clear error
￬
Clear send buffer
The reserved bits may be assigned in the future. Therefore, be sure to set only the necessary bits.
The status variable (PRN_STAT) is used in order to check for the presence/absence of data in the Send Buffer and to get the Error Status. This status variable is write-only.
If the Send buffer overflows, an error occurs. When this error occurs, the transmission error bit turns ON.
The Send buffer is 8,192 bytes.
The reserved bits may be assigned in the future. Therefore, be sure to check only the necessary bits.