Serial Support Control Register
| TMRE | Serial Timer Enable bit |
| TDIV | Timer Operation Clock Division bit |
| TSYNE | Synchronous Transmission Enable bit |
| TINTE | Timer Interrupt Enable bit |
| TINT | Timer Interrupt Flag |
| CSE | Chip Select Error Flag |
| CSEIE | Chip Select Error Interupt Enable bit |
| TBEEN | Transfer Byte Error Enable bit |