ADSP-214xx SHARC Processor Hardware Reference 6-41
FFT/FIR/IIR Hardware Modules
6. Processing moves to the next channel and repeats the procedure. If
the soft filter length is more than the hard filter length, multiple
iterations are done to process the window.
Figure 6-6. Single Channel Filtering Flow
Load I, M, B, L registers for
coefficient and data I/O
Load coefficients into
Compute result and store
in internal memory
Window
over?
To next channel
processing
NO
NO
YES
YES
coefficient memory
Preload delay line
from internal memory
Fetch next data
Last
iteration?
Update index register
values of TCB in
internal memory
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