TMS320F28375DPZP datasheet(189/226 Pages) TI

189 / 226 page

(4)

The GPIO Data Registers are unique for each CPUx and CPUx.CLAx. When the GPIO Pin Mapping Register is configured to assign a

GPIO to a particular master, the respective GPIO Data Register will control the GPIO. See the General-Purpose Input/Output (GPIO)

chapter of the TMS320F2837xD Dual-Core Microcontrollers Technical Reference Manual for more details.

9.6 C28x Processor

The CPU is a 32-bit fixed-point processor. This device draws from the best features of digital signal processing;

reduced instruction set computing (RISC); and microcontroller architectures, firmware, and tool sets.

The CPU features include a modified Harvard architecture and circular addressing. The RISC features are

single-cycle instruction execution, register-to-register operations, and modified Harvard architecture. The

microcontroller features include ease of use through an intuitive instruction set, byte packing and unpacking, and

bit manipulation. The modified Harvard architecture of the CPU enables instruction and data fetches to be

performed in parallel. The CPU can read instructions and data while it writes data simultaneously to maintain the

single-cycle instruction operation across the pipeline. The CPU does this over six separate address/data buses.

For more information on CPU architecture and instruction set, see the TMS320C28x CPU and Instruction Set

Reference Guide.

9.6.1 Floating-Point Unit

The C28x plus floating-point (C28x+FPU) processor extends the capabilities of the C28x fixed-point CPU by

adding registers and instructions to support IEEE single-precision floating-point operations.

Devices with the C28x+FPU include the standard C28x register set plus an additional set of floating-point unit

registers. The additional floating-point unit registers are the following:

• Eight floating-point result registers, RnH (where n = 0–7)

• Floating-point Status Register (STF)

• Repeat Block Register (RB)

All of the floating-point registers, except the repeat block register, are shadowed. This shadowing can be used in

high-priority interrupts for fast context save and restore of the floating-point registers.

For more information, see the TMS320C28x Extended Instruction Sets Technical Reference Manual.

9.6.2 Trigonometric Math Unit

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 9-11.

Table 9-11. TMU Supported Instructions

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

SQRTF32 RaH,RbH

a = sqrt(b)

SINPUF32 RaH,RbH

a = sin(b*2pi)

COSPUF32 RaH,RbH

a = cos(b*2pi)

ATANPUF32 RaH,RbH

a = atan(b)/2pi

QUADF32 RaH,RbH,RcH,RdH

Operation to assist in calculating ATANPU2

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.

www.ti.com

TMS320F28379D, TMS320F28379D-Q1, TMS320F28378D, TMS320F28377D

TMS320F28377D-Q1, TMS320F28376D, TMS320F28375D, TMS320F28374D

SPRS880O – DECEMBER 2013 – REVISED FEBRUARY 2021

Submit Document Feedback

189

Product Folder Links: TMS320F28379D TMS320F28379D-Q1 TMS320F28378D TMS320F28377D

TMS320F28377D-Q1 TMS320F28376D TMS320F28375D TMS320F28374D

TMS320F28375DPZP Datasheet(PDF) 189 Page - Texas Instruments

TMS320F28375DPZP Datasheet(HTML) 189 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL