Pot pin data read
SERDATR - Serial port data and status read.
This address reads data from a recive data buffer. Data in this This address reads data from a recive data buffer. Data in this buffer is loaded from a receiving shift register whenever it is full. Several interrupt request bits are also read at this address, along with the data as shown below.
| Bit | Function | Description |
|---|---|---|
| 15 | OVRUN | Serial port receiver overun |
| 14 | RBF | Serial port receive buffer full (mirror) |
| 13 | TBE | Serial port transmit buffer empty (mirror) |
| 12 | TSRE | Serial port transmit shift reg. empty |
| 11 | RXD | RXD pin receives UART serial data for direct bit test by the micro. |
| 10 | X | Not used. |
| 09 | STP | Stop bit |
| 08 | STP-DB8 | Stop bit if LONG, data bit if not. |
| 07 | DB7 | Data bit. |
| 06 | DB6 | Data bit. |
| 05 | DB5 | Data bit. |
| 04 | DB4 | Data bit. |
| 03 | DB3 | Data bit. |
| 02 | DB2 | Data bit. |
| 01 | DB1 | Data bit. |
| 00 | DB0 | Data bit. |