My code size exceeds program memory in ADAU145x

SigmaDSP & SigmaStudio ajay_basarur Mar 7, 2014 00:00 3 replies Original on forum ↗

Thread Summary

The user inquired about using the ADAU145x processor for decoding Enhanced DDP, noting the program memory requirement exceeds the 32 KBytes available. The final answer confirmed that extending the program memory using an external EEPROM is not possible and suggested considering a more general-purpose DSP like the Sharc or Blackfin. The accompanying answer noted that the ADAU145x's architecture can achieve high code density, which might reduce the memory requirement, but this is implementation-dependent.
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ajay_basarur Question

Mar 7, 2014 00:00

Hi,

Can i use ADAU145x processor for audio decoding? I am planning to decode Enhanced DDP decoder on Sigma DSP 300 of ADAU145x processor. The program memory required for the decoder is greater than 32 KBytes but the processor's program memory size is 32 KBytes. What to do in this kind of situation? Can i use EEPROM as extended program memory? Quick suggestions will be appreciated.

Regards
~Ajay

sigma300

adau145x

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Yagami Reply

Mar 12, 2014 00:00

Hi Ajay,

Unfortunately there is no way to extend the program memory of the ADAU1452. The program counter is only capable of addressing internal program memory addresses, so using an external memory to increase the program size is not possible. If you are implementing an enhanced decoder, then it is probably better to choose a more general-purpose DSP like the Sharc or Blackfin. SigmaDSPs are more streamlined for audio post-processing.

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ADIApproved Reply

Apr 7, 2014 00:00

Hi Ajay,

While highly implementation dependent, the ADAU145x processor can achieve very high code density because of it's quad multiplier architecture and SIMD instruction set. I don't know anything about "Enhanced DDP", but generally it is not meaningful to use a program memory requirement for another processor (e.g. ARM) and assume the ADAU145X will require the same resources, it could be much less or much more.

Regards,

John

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EZAdministrator Reply

Aug 2, 2018 00:00

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin

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