Serial Data Transfer Word
OS SWI Calls
» OS_SerialOp
» OS_SerialOp 1
» Serial Data Transfer Word
Serial Data Transfer Word
| Bit | Access | Value | Meaning |
|---|---|---|---|
| 0,1 | R/W | 0 | 8 bit word |
| 1 | 7 bit word | ||
| 2 | 6 bit word | ||
| 3 | 5 bit word | ||
| 2 | R/W | 0 | 1 stop bit |
| 1 | 2 stop bits in most cases. | ||
| 1 stop bit if 8 bit word with parity. | |||
| 1.5 stop bits if 5 bit word without parity | |||
| 3 | R/W | 0 | parity disabled. |
| 1 | Parity enabled. | ||
| 4, 5 | R/W | 0 | odd parity |
| 1 | Even parity | ||
| 2 | Parity always 1 on TX and ignored on RX | ||
| 3 | Parity always 0 on TX and ignored on RX | ||
| 6 – 31 | Reserved must be set to zero |
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