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Texas Instruments TMS320C64X User Manual

Page 159

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Glossary

C-5

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.