[CYW20719 and CYW20721] What is the difference?

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YoJa_3107936
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Hi

The customer is selecting the IC.

1. I would like to know the difference between CYW20719 and CYW20721.

When checking the DATA, there is almost no difference in function.

Please tell me the difference between H / W and FW.

2. On Chip 1 Mb Flash is in both CYW20719 and CYW20721,

    so is it correct with the understanding that an external Flash ROM is not required in principle?

Thanks,

Yang

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1 Solution
SheetalJ
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First comment on KBA 750 replies posted 500 likes received

Hi Yang,

1. CYW20721 is an audio solution which supports HFP, HSP functionalities. There are few changes in ROM which make 20721 eligible for audio support. Please check: Re: I need information about CYW20719 and CYW20721

2. No there is no need of external ROM for both the devices.

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7 Replies
SheetalJ
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First comment on KBA 750 replies posted 500 likes received

Hi Yang,

1. CYW20721 is an audio solution which supports HFP, HSP functionalities. There are few changes in ROM which make 20721 eligible for audio support. Please check: Re: I need information about CYW20719 and CYW20721

2. No there is no need of external ROM for both the devices.

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YoJa_3107936
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About 1

There is no difference in HW, it is a difference in FW (BT stack).

Is this recognition correct?

Thanks,

Yang

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Yes correct.

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YoJa_3107936
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A contradiction was found in your answer.

https://community.cypress.com/message/218064#218064

Check the following information from the link above.

> The CYW20719 doesn't support HSP and HFP in the software and stack.

> You can't use examples for CYW20706 because they have different rom code and libraries.

> 20719B2 is supported on Modus, but it doesn't support HSP and HFP either.

From your readme.txt, CYW20719B2 states that HFP Audio Gateway is also supported.

My question:

1. Is it correct to understand that CYW20719B2 and CYW20721B2 also support HFP Audio Gateway?

2. Is it possible that the support profile in the ROM stack has changed when changing from CYW20719B1 to CYW20719B2?

3. Is CYW20719B2 HSP supported?

Watch-readme-text.JPG

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Hi Yang,

Please refer to following answers:

1. Yes CYW20719B2  supports audio gateway. 20719B2 doesn't support audio_pro applications, but it has few audio apps support like watch, AG.

2. Yes there are ROM changes between CYW20719B1 and CYW20719B2.

3. No CYW20719B2 doesn't support HSP.

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YoJa_3107936
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Is the following understanding correct?

CYW20721B2: HSP, HFP (full support)

CYW20719B2: not  support HSP, not support HFP Audio_pro  (support other features)

Thanks,

Yang

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CYW20719B2: not  support HSP, not support HFP Audio_pro  (support other features)

>> What do you mean by 'support other features'?  It doesn't support audio_pro applications.

If you check the available examples, only Audio gateway and Audio watch are supported for CYW20719B2. HSP is not supported.

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