THMASK=BEATS_4
ISI Configuration 1 Register
| HSYNC_POL | Horizontal Synchronization Polarity |
| VSYNC_POL | Vertical Synchronization Polarity |
| PIXCLK_POL | Pixel Clock Polarity |
| GRAYLE | Grayscale Little Endian |
| EMB_SYNC | Embedded Synchronization |
| CRC_SYNC | Embedded Synchronization Correction |
| FRATE | Frame Rate [0…7] |
| DISCR | Disable Codec Request |
| FULL | Full Mode is Allowed |
| THMASK | Threshold Mask 0 (BEATS_4): Only 4 beats AHB burst allowed 1 (BEATS_8): Only 4 and 8 beats AHB burst allowed 2 (BEATS_16): 4, 8 and 16 beats AHB burst allowed |
| SLD | Start of Line Delay |
| SFD | Start of Frame Delay |