Thanks Oli, and Michael, sometimes you can't see the forest due to the=20
trees. :) I think I must have been looking for something important like=20
that to be staring me in the face like the examples for the USART on=20
page 198 section 18.2. :(  Thanks again, and sorry for all the bandwidth.

On 2/21/2011 10:29 AM, Michael Rigby-Jones wrote:
>
>   =20
>> -----Original Message-----
>> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
>>     =20
> Behalf
>   =20
>> Of Olin Lathrop
>> Sent: 21 February 2011 14:12
>> To: Microcontroller discussion list - Public.
>> Subject: Re: [PIC] IC2 SSPADD value ?
>>
>> Carl Denk wrote:
>>     =20
>>> I had looked diligently for a formula prior to posting here, and
>>>       =20
> found
>   =20
>>> none. If someone can find one, I would appreciate where it is. My
>>> reference is "PIC18F2220/2320/4220/4320 Data Sheet", copywrite 2007.
>>>       =20
>> I just took a look to see what all the fuss is about.  I donwloaded
>>     =20
> the
>   =20
>> latest datasheet a few minutes ago, which appears to be the same as
>>     =20
> what
>   =20
>> you
>> cited (2007, DS39599G).
>>
>> While section 17.4.7 "Baud Rate" on page 181 doesn't explicitly show a
>> formula, it is nonetheless quite clear how the baud rate is generated
>>     =20
> and
>   =20
>> therefore what SSPADD value is needed for a particular instruction
>>     =20
> clock
>   =20
>> and
>> desired baud rate value.
>>
>> Obviously:
>>
>>               InstructionClock
>>    BaudRate =3D ----------------
>>                  SSPADD + 1
>>     =20
>
> Check out page 166 (SSPCON1 description) and page 168 (section 17.4.2
> "Operation" ).  Both contain the formula.  Not the most obvious places
> to put it, but a text search for "SSPADD" quickly finds them.
>
> Regards
>
> Mike
>
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
>   =20
--=20
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