Video FIFO Status Register.
| FEMPTY | FIFO empty. |
| FTHD | FIFO above threshold. |
| FFULL | FIFO full. |
| UNDERRUN | FIFO underrun |
| OVERRUN | FIFO overrun |
| OUTSYNC | CSI out of sync |
| FMTERR | CSI Pixel Format Error |
| AHBWTO | AHB wait time out |
| FS | CSI Frame Start |
| FE | CSI Frame End |
| LS | CSI Line Start |
| LE | CSI Line End |
| FELT | FIFO remaining entity count |
| FMT | CSI pixel format of current transaction |