Analog Devices ADAV4601 User Manual

ADAV4601 System Design Document Confidential Information
Rev.1 August 2009 Analog Devices Page 33
Figure 28: SigmaStudio Pin Assignments
Note: An important point to note is that the size and functionality of the Audio Flow is limited by the number of
instructions available in the Program ROM of the ADAV4601. This is only critical for very large designs so therefore
care should be taken when designing large audio flows.
The ADAV4601 internally operates at multiples of a sampling frequency (Fs) of 48kHz. When creating audio flows in
SigmaStudio it is important to set the sampling frequency of the audio flow to 48kHz. This ensures that all filters
coefficients are calculated with a sampling frequency of 48kHz. See Figure 29 for more details on setting the
sampling frequency of the audio flow.
1) Set sampling
Frequency
2) Propagate sampling
Frequency
1) Set sampling
Frequency
2) Propagate sampling
Frequency
Figure 29: Setting SigmaStudio Sampling Rate
Once the sampling frequency has been set to 48kHz, the propagate sampling frequency should be selected. This
ensures that all blocks within the audio flow use this new sampling frequency.
ADAV46xx I/O

Analog Devices ADAV4601 Specifications

General

Brand	Analog Devices
Model	ADAV4601
Category	Motherboard
Language	English