OCALC=dis, STC=nop, CLC=exp, MAAER=noError
MAA Control Register.
| STC | Start Calculation. This bit functions as both the control and the status of the MAA. If the size value in the MAWS register is invalid, the STC bit will be cleared by hardware immediately. Otherwise, the STC bit is automatically cleared following the completion of each calculation or detecting an error. Clearing the STC bit resets the controller to its default state. 0 (nop): No operation/complete. 1 (start): Start operation. |
| CLC | Calculation Configuration. These bits select desired calculation. 0 (exp): Exponentiation. 1 (sq): Square operation. 2 (mul): Multiplication. 3 (sqMul): Square followed by a multiplication. 4 (add): Addition. 5 (sub): Subtraction. |
| OCALC | Optimized Calculation Control. For optimized calculation, unnecessary multiply operations after normalizing the exponent are skipped. 0 (dis): Disable. 1 (en): Enable. |
| MAAER | MAA Error. The MAAER bit defaults to 0 and can only be set by hardware. Once set, it must be cleared by software otherwise no new operation can be initiated. Software writes 1 to this bit has no effect and MAAER will maintain its original state. 0 (noError): No Error. 1 (error): Error. |
| AMS | Multiplier A Memory Select. These bits select the starting position of the parameter ‘a’ within the logical segment specified by AMA. |
| BMS | Multiplicand B Memory Select. These bits select the starting position of the parameter ‘b’ within the logical segment specified by BMA. |
| EMS | Exponent Memory Select. These bits select the starting position of the parameter ‘e’ within the logical segment specified by EMA. |
| MMS | Modulus Memory Select. These bits select the starting position of the parameter ‘m’ within the logical segment 5. |
| AMA | Multiplier / Operand A Memory Assignment. These bits select the logical cryptographic RAM segment for the parameter ‘a’. |
| BMA | Multiplicand / Operand B Memory Assignment. These bits select the logical cryptographic RAM segment for the parameter ‘b’. |
| RMA | Result Memory Assignment. These bits select the logical cryptographic RAM segment for the parameter ‘r’. |
| TMA | Temporary Memory Assignment. These bits select the logical cryptographic RAM segment for the parameter ‘t’. |