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How to Program Renesas Audio Processor without Datasheet available
- Thread starter luckwill7
- Start date
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- Nov 17, 2011
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The title says "without datasheet", in your post you state "there is datasheet available".
Which one is true?
Without a datasheet or at least a well documented library you cannot program the processor. At least not without some deep digging into existing code and analysing signals - if you were capable of this feat, you wouldn't be her to ask. So: no, you can't.
Which one is true?
Without a datasheet or at least a well documented library you cannot program the processor. At least not without some deep digging into existing code and analysing signals - if you were capable of this feat, you wouldn't be her to ask. So: no, you can't.
R2A15218FP is identical to R2A15220FP, both in the internal structure and in the command. The input selector is a little different. The complete datasheet is not published online anywhere, but there is a summary datasheet in which there are data and information related to the command part.
I have attached the datasheet of the R2A15220FP chip, and a library with which you can command both this and the R2A15218FP compatible with arduino. Be very careful when switching the internal switches of these chips, a mute circuit is necessary on the integrated outputs, otherwise you risk "blowing" the speakers. I know it's been a while since the topic was started, but maybe it's useful.
I have attached the datasheet of the R2A15220FP chip, and a library with which you can command both this and the R2A15218FP compatible with arduino. Be very careful when switching the internal switches of these chips, a mute circuit is necessary on the integrated outputs, otherwise you risk "blowing" the speakers. I know it's been a while since the topic was started, but maybe it's useful.
I have attached in txt format. That code is just for testing. It might be necessary to have a resistive divider on the arduino outputs, the arduino only knows 5 volts, I don't know if the integrated also accepts commands at 5 volts. I ordered it with 3.3 volt signals.
Also, the integrated is smd and has many pins, I think you have already mounted it on an electronic board. If you give more details about what you want to do with it, maybe we can help you.
Also, the integrated is smd and has many pins, I think you have already mounted it on an electronic board. If you give more details about what you want to do with it, maybe we can help you.
I am using arduino nano in which pins did arduino output will came for connecting r2a15218fp audio processor and how can i give 3.3volts in arduino to audio processor
I only use Whatsapp for family stuff. The discussion can continue here on the forum.
I have attached two pictures from the service manual of the Onkyo TX 8050 receiver, in which you can see how the muting circuit can be made. The service manual can be found on the internet.
You can use any two pins from the digital pins D2 - D9 of the arduino. Pins are set as follows: Librarie_R2A15218FP_V1_1 librarie_R2A15218FP_V1_1(x, y); x is the pin to which you connect the data and y is the pin to which you connect the clock.
Example: Librarie_R2A15218FP_V1_1 librarie_R2A15218FP_V1_1(4, 5); Connect the data to pin D4 and clock to pin D5.
To give 3.3 volts from the arduino outputs, a simple resistive divider on each output is enough. Connect a 2k2 resistor in series (on the arduino outputs) and a 3k3 resistor to ground (between the inputs of the sound processor and ground).
When you change the inputs, the muting circuit must be active for several tens - hundreds of milliseconds. Probably 300-400 milliseconds will be enough.
I have attached two pictures from the service manual of the Onkyo TX 8050 receiver, in which you can see how the muting circuit can be made. The service manual can be found on the internet.
You can use any two pins from the digital pins D2 - D9 of the arduino. Pins are set as follows: Librarie_R2A15218FP_V1_1 librarie_R2A15218FP_V1_1(x, y); x is the pin to which you connect the data and y is the pin to which you connect the clock.
Example: Librarie_R2A15218FP_V1_1 librarie_R2A15218FP_V1_1(4, 5); Connect the data to pin D4 and clock to pin D5.
To give 3.3 volts from the arduino outputs, a simple resistive divider on each output is enough. Connect a 2k2 resistor in series (on the arduino outputs) and a 3k3 resistor to ground (between the inputs of the sound processor and ground).
When you change the inputs, the muting circuit must be active for several tens - hundreds of milliseconds. Probably 300-400 milliseconds will be enough.
Attachments
As the sound processor is built, it has separate inputs for Cout, SWout, SRout, SLout, SBLout and SBRout. You will have to apply separate audio signal for these. Otherwise, I can't figure out why it wouldn't work, since you have a signal on one of the outputs.
You haven't posted the schematic (if you have one) or the code, it's hard, if not impossible to answer your question, without any details related to the schematic and the code.
As for the other sound processor, I had the R2A15218FP and M61540FP chip for which I made the libraries (with help from the arduino forum) and I could test it, having them physically.
I could help you with a test code, but I don't know if it will work, not having the physical chip to test it, and you will have to make the libraries yourself.
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