49.7.20 TC QDEC Interrupt Status Register
| Name: | TC_QISR |
| Offset: | 0xD4 |
| Reset: | 0x00000000 |
| Property: | Read-only |
| 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 | |
| DIR | |||||||||
| Access | R | ||||||||
| Reset | 0 |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| MPE | QERR | DIRCHG | IDX | ||||||
| Access | R | R | R | R | |||||
| Reset | 0 | 0 | 0 | 0 |
Bit 8 – DIR Direction
Returns an image of the current rotation direction.
Bit 3 – MPE Consecutive Missing Pulse Error
| Value | Description |
|---|---|
| 0 | The number of consecutive missing pulses has not reached the maximum value specified in MAXCMP since the last read of TC_QISR. |
| 1 | An occurrence of MAXCMP consecutive missing pulses has been detected since the last read of TC_QISR. |
Bit 2 – QERR Quadrature Error
| Value | Description |
|---|---|
| 0 | No quadrature error since the last read of TC_QISR. |
| 1 | A quadrature error occurred since the last read of TC_QISR. |
Bit 1 – DIRCHG Direction Change
| Value | Description |
|---|---|
| 0 | No change on rotation direction since the last read of TC_QISR. |
| 1 | The rotation direction changed since the last read of TC_QISR. |
Bit 0 – IDX Index
| Value | Description |
|---|---|
| 0 | No Index input change since the last read of TC_QISR. |
| 1 | The IDX input has changed since the last read of TC_QISR. |