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#1 2017-07-14 23:22:24

hkplus
Contributor
Registered: 2015-01-07
Posts: 104

EM4305 for FSK

Looking at the datasheet for the EM4305, it looks like there is no way to do FSK encoding?  I swear I saw someone do FSK on this part in the past, but I must be wrong.  Is there any part from EM that can do FSK?

Thank you,
HKPLUS

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#2 2017-07-15 01:08:43

marshmellow
Moderator
From: US
Registered: 2013-06-10
Posts: 2,086

Re: EM4305 for FSK

It is not documented on public datasheets.

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#3 2017-07-15 04:51:19

marshmellow
Moderator
From: US
Registered: 2013-06-10
Posts: 2,086

Re: EM4305 for FSK

check the em4305 source code it may help.  or find the EM4469 datasheet

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#4 2017-10-30 23:07:31

hkplus
Contributor
Registered: 2015-01-07
Posts: 104

Re: EM4305 for FSK

marshmellow wrote:

check the em4305 source code it may help.  or find the EM4469 datasheet

Answer is there is no way to do FSK on the EM4305.

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#5 2017-10-30 23:19:02

marshmellow
Moderator
From: US
Registered: 2013-06-10
Posts: 2,086

Re: EM4305 for FSK

There appears to be different versions of the em 4305.  I've seen at least two versions that both match the chip designations of em4305 by the datasheet, but one accepts the undocumented modulation settings and one doesn't.   

Possibly an em4405?

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