ZHCSHE0 December 2017 TMS320F28377D-EP
The TMU extends the capabilities of a C28x+FPU by adding instructions and leveraging existing FPU instructions to speed up the execution of common trigonometric and arithmetic operations listed in Table 5-10.
|INSTRUCTIONS||C EQUIVALENT OPERATION||PIPELINE CYCLES|
|MPY2PIF32 RaH,RbH||a = b * 2pi||2/3|
|DIV2PIF32 RaH,RbH||a = b / 2pi||2/3|
|DIVF32 RaH,RbH,RcH||a = b / c||5|
|SQRTF32 RaH,RbH||a = sqrt(b)||5|
|SINPUF32 RaH,RbH||a = sin(b * 2pi)||4|
|COSPUF32 RaH,RbH||a = cos(b * 2pi)||4|
|ATANPUF32 RaH,RbH||a = atan(b) / 2pi||4|
|QUADF32 RaH,RbH,RcH,RdH||Operation to assist in calculating ATANPU2||5|
No changes have been made to existing instructions, pipeline or memory bus architecture. All TMU instructions use the existing FPU register set (R0H to R7H) to carry out their operations. A detailed explanation of the workings of the FPU can be found in the TMS320C28x Extended Instruction Sets Technical Reference Manual.