46.10.45 USART Comparison Register
This register can only be written if the WPEN bit is cleared in the USART Write Protection Mode Register.
| Name: | FLEX_US_CMPR |
| Offset: | 0x290 |
| Reset: | 0x00000000 |
| Property: | Read/Write |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| VAL2[8] | |||||||||
| Access | R/W | ||||||||
| Reset | 0 |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| VAL2[7:0] | |||||||||
| 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 | 0 | |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| CMPPAR | CMPMODE[1:0] | VAL1[8] | |||||||
| Access | R/W | R/W | R/W | R/W | |||||
| Reset | 0 | 0 | 0 | 0 | |||||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| VAL1[7:0] | |||||||||
| 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 | 0 | |
Bits 24:16 – VAL2[8:0] Second Comparison Value for Received Character
| Value | Description |
|---|---|
| 0–511 | The received character must be lower than or equal to the value of VAL2 and higher than or equal to VAL1 to set the FLEX_US_CSR.CMP flag. |
Bit 14 – CMPPAR Compare Parity
| Value | Description |
|---|---|
| 0 | The parity is not checked and a bad parity cannot prevent from waking up the system. |
| 1 | The parity is checked and a matching condition on data can be cancelled by an error on parity bit, so no wakeup is performed. |
Bits 13:12 – CMPMODE[1:0] Comparison Mode
| Value | Name | Description |
|---|---|---|
| 0 | FLAG_ONLY | Any character is received and comparison function drives CMP flag. |
| 1 | START_CONDITION | Comparison condition must be met to start reception. |
| 2 | FILTER | Comparison must be met to receive the current data only |
Bits 8:0 – VAL1[8:0] First Comparison Value for Received Character
| Value | Description |
|---|---|
| 0–511 | The received character must be higher than or equal to the value of VAL1 and lower than or equal to VAL2 to set the FLEX_US_CSR.CMP flag. |