JPEG control register
| JCEN | JPEG Core Enable |
| IFTIE | Input FIFO Threshold Interrupt Enable |
| IFNFIE | Input FIFO Not Full Interrupt Enable |
| OFTIE | Output FIFO Threshold Interrupt Enable |
| OFNEIE | Output FIFO Not Empty Interrupt Enable |
| EOCIE | End of Conversion Interrupt Enable |
| HPDIE | Header Parsing Done Interrupt Enable |
| IDMAEN | Input DMA Enable |
| ODMAEN | Output DMA Enable |
| IFF | Input FIFO Flush |
| OFF | Output FIFO Flush |