ZHCSHE0 December 2017 TMS320F28377D-EP
PRODUCTION DATA.
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.