USART FI DI RATIO Register
This register can only be written if the WPEN bit is cleared in the USART Write Protection Mode Register.
For LON specific configuration, see “USART Transmitter Timeguard Register (LON_MODE)”.
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| FI_DI_RATIO[15:8] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| FI_DI_RATIO[7:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | |
FI Over DI Ratio Value
| Value | Description |
|---|---|
| 0 |
If ISO7816 mode is selected, the baud rate generator generates no signal. |
| 1–2 |
Do not use. |
| 3–2047 |
If ISO7816 mode is selected, the baud rate is the clock provided on SCK divided by FI_DI_RATIO. |