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Re: [rsgb_lf_group] Re: LF: PIC-based GPSDO with A/D converter / support

from [Johan Bodin] [Permanent Link][Original]
To: [email protected]
Subject: Re: [rsgb_lf_group] Re: LF: PIC-based GPSDO with A/D converter / supported serial baudrates ?
From: Johan Bodin <[email protected]>
Date: Mon, 22 Feb 2016 09:30:39 +0100
Cc: [email protected]
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Andy,

on the '688, set both BRG16 and BRGH bits and the baudrate formula becomes baud = Fosc / (4 * (N+1)) with 16-bit baudrate divisor in SPBRGH:SPBRG.

In other words, set

    BRG16 = 1;
    BRGH = 1;
    SPBRGH = 0;
    SPBRG = 0;

and you'll get 3Mbaud with a 12MHz crystal.

73 de
Johan SM6LKM

Andy Talbot wrote:
 
You will need to clock at 48MHz to get 3Mbaud

Andy  G4JNT


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