Texas Instruments TMS320C64X manual FFT See fast fourier transform

Glossary

DSP_minval: Minimum value of a vector.

DSP_mul32: 32-bit vector multiply.

DSP_neg32: 32-bit vector negate.

DSP_q15tofl: Q15 to float conversion.

DSP_radix2: Complex forward FFT (radix 2).

DSP_recip16: 16-bit reciprocal.

DSP_r4fft: Complex forward FFT (radix 4).

DSP_vecsumsq: Sum of squares.

DSP_w_vec: Weighted vector sum.

E

evaluation module (EVM): Board and software tools that allow the user to evaluate a specific device.

external interrupt: A hardware interrupt triggered by a specific value on a pin.

external memory interface (EMIF): Microprocessor hardware that is used to read to and write from off-chip memory.

F

fast Fourier transform (FFT): An efficient method of computing the discrete Fourier transform algorithm, which transforms functions between the time domain and the frequency domain.

fetch packet: A contiguous 8-word series of instructions fetched by the CPU and aligned on an 8-word boundary.

FFT: See fast fourier transform.

flag: A binary status indicator whose state indicates whether a particular condition has occurred or is in effect.

frame: An 8-word space in the cache RAMs. Each fetch packet in the cache resides in only one frame. A cache update loads a frame with the requested fetch packet. The cache contains 512 frames.

G

global interrupt enable bit (GIE): A bit in the control status register (CSR) that is used to enable or disable maskable interrupts.

Glossary C-5