Looking for suitable silicon (KL26/K20_50/K20_100) for Google AOA kit

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Looking for suitable silicon (KL26/K20_50/K20_100) for Google AOA kit

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kai_liu
Senior Contributor I

I have designed a development kit for Google ADB (Android Debug Bridge) with MKL25Z128VLK/VLH4. Now I am looking for a suitable silicon for AOA (Android Open Accessory).

KL25Z is a good choice, but not perfect.

The MCU used in AOA/ADK should have I2S/USB host.

FSL released a new FRDM-K20D50M with I2S port available on different GPIO. FRDM-KL46Z is better, it has separate column dedicated for I2S.

Since there is no application note for similar design, I am not confident if KL26/46 can offer enough computing power to process USB host communication as well as Audio playback + recording on 48MHz? Even M4F based K20D50 can only run up to 50MHz. Should I use K20D100?

But I can not find any pricing information for K20_100 at K20_100 产品概述

I can only find K20D50. There is no suitable boards for K20_100. I have to design it from scratch?

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Paul_Tian
NXP Employee
NXP Employee

Hi, Liu Kai

I am agree with you. KL46 is not a good choice for your applicaiton. It only can run up to 48MHz. I think K20 series is good for you. It has I2S and USB function. It also can run up to 120MHz.

Best Regards

Paul

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carlos_neri
NXP Employee
NXP Employee

for the K20_100 you can use a TWR-K60D100M or  to start your project and your custom board is developed. Once you have your boar then port the application. For the audio codec, probably a TWR-AUDIO-SGTL or a TWR-AUDIO-DA7321:

TWR-AUDIO-SGTL Product Summary Page

TWR-AUDIO-DA7321 audio codec peripheral board for the Freescale Tower System

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Paul_Tian
NXP Employee
NXP Employee

Hi, Liu Kai

I am agree with you. KL46 is not a good choice for your applicaiton. It only can run up to 48MHz. I think K20 series is good for you. It has I2S and USB function. It also can run up to 120MHz.

Best Regards

Paul

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