communication configuration register
| INSTRUCTION | Instruction  |  
| IMODE | Instruction mode  |  
| ADMODE | Address mode  |  
| ADSIZE | Address size  |  
| ABMODE | Alternate bytes mode  |  
| ABSIZE | Alternate bytes size  |  
| DCYC | Number of dummy cycles  |  
| DMODE | Data mode  |  
| FMODE | Functional mode  |  
| SIOO | Send instruction only once mode  |  
| DHHC | DDR hold half cycle  |  
| DDRM | Double data rate mode  |