Max order of FIR filter in the FIR block?
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Hello, I'm using ADAU1787, I want to know the max order of FIR filter that this board can implemente. When I change the sampling rate, the smaller the rate, the bigger the order that the FIR block can hold.
ADAU1787
Integrated/Special Purpose A/D Converters
Audio CODECs
Hello,
According to the datasheet:
When using a single FIR block, there are around 68-72 instructions of overhead. Adding additional FIR taps will add a single instruction. So, for example, with a very simple SigmaDSP schematic of an ADC -> FIR Filter -> Output, 444 FIR taps will be available with SDSP_SPEED = 0:
Best regards,
Tyler Krome
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