Hi.
I`m thinking to mess with new project in winter. Idea is to take OEM VAG MIB2 amplifier, with ADSP21489 DSP, and edit its firmware. Goal is to remove all equalization and leave only xover points which are fixed and preloaded in firmware from factory. This will open possibility to use aftermarket speakers.
As I understand DSP is preloaded with instructions via SPI. As here is no external eeprom like on older versions, seems that DSP firmware is loaded from NEC mcu.
Didn't have time to check is NEC locked or not. If its locked then should be possible to read SPI data on boot, edit it and then add and use external memory source to take new settings.
Problem is that I have no idea about DSP and its mapping/instruction data.
What do you think?
I`m thinking to mess with new project in winter. Idea is to take OEM VAG MIB2 amplifier, with ADSP21489 DSP, and edit its firmware. Goal is to remove all equalization and leave only xover points which are fixed and preloaded in firmware from factory. This will open possibility to use aftermarket speakers.
As I understand DSP is preloaded with instructions via SPI. As here is no external eeprom like on older versions, seems that DSP firmware is loaded from NEC mcu.
Didn't have time to check is NEC locked or not. If its locked then should be possible to read SPI data on boot, edit it and then add and use external memory source to take new settings.
Problem is that I have no idea about DSP and its mapping/instruction data.
What do you think?
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ADSP21489 isn't a dac. It is a full blown DSP chip, the processing power behind the very expensive Mola Mola Tambaqui dac.
ADSP-21489 Datasheet and Product Info | Analog Devices
ADSP-21489 Datasheet and Product Info | Analog Devices