>
>
>>>
>>>>Hi
>>>>
>>>>Is it just me or is the Baudrate setting of a 8051 core really so
>>> limited?
>>>>I have a 8051 compatible controller with 13MHz Osc (unfortunately,
> this
>>> is a
>>>>given situation and not chnageable). Is it true that 9600 is the
> fastest
>>>
>>>>possible Baudrate that somehow fits to the standard baudrates of a PC?
> I
>>> was
>>>>looking for something a bit faster, i.e. 57600.
>>>>Can somebody confirm this or guide me toward the correct setting if I
> am
>>>
>>>>wrong?
>>>>
>>>>Thanks and best regards,
>>>>Franz
>>>>
>>
>>>>>>re-bottom posted for your convenience
>>
>>
>>"microlab" <sun2ish@yahoo.com> wrote in message
>>news:juCdnZDfGPC3PdbYnZ2dnUVZ_rudnZ2d@giganews.com...
>>> hai
>>> it's possible to generate higher baudrate using 8051.
>>> the only thing you have to check is that whether the 8051 will work in
> a
>>> higher frequency.i heard that silab is manufacturing 8051 which will
> work
>>> at the speed of 100 mhz.using this speed you can generate higher
>>> baudrates.the equation is the same.when we are using the 11.0592mhz
>>> crystal(the commenly used)we limit the baud rate up to 9600.
>>>
>>> ml
>>>
>>
>>
>>
>>What? you can get  100 Baud to 115KBaud wiuth any 8051. Just pick the
> right
>>xtal.. In  fact.. I think 11.0592 will hit them all.. But there is not a
>
>>9600 limit nor do you need a 100Mhz MPU to do it.
>>
>>



>>>>>>re-bottom posted for your convenience


"microlab" <sun2ish@yahoo.com> wrote in message 
news:xsGdnQLnnYvbgdHYnZ2dnUVZ_oednZ2d@giganews.com...
> hai
> it doesn't meant that you must go to the 100mhz crystal
> it's just a possibility we were discussing
> i meant just to take care of the the processor about the maximum frequency
> on which it will run thatt's it.not reqd to select the 100 mhz crystal
>
> thanking you
>
> ml
\

that makes less sense than your first statement..





>>
>>
>>
>>
>
> 

hai
it doesn't meant that you must go to the 100mhz crystal
it's just a possibility we were discussing
i meant just to take care of the the processor about the maximum frequency
on which it will run thatt's it.not reqd to select the 100 mhz crystal

thanking you

ml


>>
>>>Hi
>>>
>>>Is it just me or is the Baudrate setting of a 8051 core really so
>> limited?
>>>I have a 8051 compatible controller with 13MHz Osc (unfortunately,
this
>> is a
>>>given situation and not chnageable). Is it true that 9600 is the
fastest
>>
>>>possible Baudrate that somehow fits to the standard baudrates of a PC?
I
>> was
>>>looking for something a bit faster, i.e. 57600.
>>>Can somebody confirm this or guide me toward the correct setting if I
am
>>
>>>wrong?
>>>
>>>Thanks and best regards,
>>>Franz
>>>
>
>>>>>re-bottom posted for your convenience
>
>
>"microlab" <sun2ish@yahoo.com> wrote in message 
>news:juCdnZDfGPC3PdbYnZ2dnUVZ_rudnZ2d@giganews.com...
>> hai
>> it's possible to generate higher baudrate using 8051.
>> the only thing you have to check is that whether the 8051 will work in
a
>> higher frequency.i heard that silab is manufacturing 8051 which will
work
>> at the speed of 100 mhz.using this speed you can generate higher
>> baudrates.the equation is the same.when we are using the 11.0592mhz
>> crystal(the commenly used)we limit the baud rate up to 9600.
>>
>> ml
>>
>
>
>
>What? you can get  100 Baud to 115KBaud wiuth any 8051. Just pick the
right 
>xtal.. In  fact.. I think 11.0592 will hit them all.. But there is not a

>9600 limit nor do you need a 100Mhz MPU to do it.
>
>
>
>
>
>

>
>>Hi
>>
>>Is it just me or is the Baudrate setting of a 8051 core really so
> limited?
>>I have a 8051 compatible controller with 13MHz Osc (unfortunately, this
> is a
>>given situation and not chnageable). Is it true that 9600 is the fastest
>
>>possible Baudrate that somehow fits to the standard baudrates of a PC? I
> was
>>looking for something a bit faster, i.e. 57600.
>>Can somebody confirm this or guide me toward the correct setting if I am
>
>>wrong?
>>
>>Thanks and best regards,
>>Franz
>>

>>>>re-bottom posted for your convenience


"microlab" <sun2ish@yahoo.com> wrote in message 
news:juCdnZDfGPC3PdbYnZ2dnUVZ_rudnZ2d@giganews.com...
> hai
> it's possible to generate higher baudrate using 8051.
> the only thing you have to check is that whether the 8051 will work in a
> higher frequency.i heard that silab is manufacturing 8051 which will work
> at the speed of 100 mhz.using this speed you can generate higher
> baudrates.the equation is the same.when we are using the 11.0592mhz
> crystal(the commenly used)we limit the baud rate up to 9600.
>
> ml
>



What? you can get  100 Baud to 115KBaud wiuth any 8051. Just pick the right 
xtal.. In  fact.. I think 11.0592 will hit them all.. But there is not a 
9600 limit nor do you need a 100Mhz MPU to do it.

hai
it's possible to generate higher baudrate using 8051.
the only thing you have to check is that whether the 8051 will work in a
higher frequency.i heard that silab is manufacturing 8051 which will work
at the speed of 100 mhz.using this speed you can generate higher
baudrates.the equation is the same.when we are using the 11.0592mhz
crystal(the commenly used)we limit the baud rate up to 9600.

ml


>Hi
>
>Is it just me or is the Baudrate setting of a 8051 core really so
limited?
>I have a 8051 compatible controller with 13MHz Osc (unfortunately, this
is a 
>given situation and not chnageable). Is it true that 9600 is the fastest

>possible Baudrate that somehow fits to the standard baudrates of a PC? I
was 
>looking for something a bit faster, i.e. 57600.
>Can somebody confirm this or guide me toward the correct setting if I am

>wrong?
>
>Thanks and best regards,
>Franz
>
>
>

"Chris Hills" <chris@phaedsys.org> schrieb im Newsbeitrag 
news:LWjQGeAQ3D3EFAzl@phaedsys.demon.co.uk...
> In article <4k1fj0Fa1si4U2@news.dfncis.de>, Hans-Bernhard Broeker
> <broeker@physik.rwth-aachen.de> writes
>>McLion <@> wrote:
>>
>>> And like I already wrote before: The Controller type and it clock
>>> frequency is 'given' and not changeable.
>>
>>And right there is your problem.  You let things be "given" to you by
>>people who don't know what they're doing.
>>
>
> That is a little unfair. You don't know why the clock frequency is
> fixed.
>

Thanks ... you're right.
Contrary to Hans-Bernhard I work 'in the real-world' where the customer with 
it's given hardware tells you what he wants.
There are two choices: love it (and adapt to it) or leave it. However, 
always keep in mind that the customer is the one who pays the salary check 
at the end of every month.

Franz 

In article <4k1fj0Fa1si4U2@news.dfncis.de>, Hans-Bernhard Broeker
<broeker@physik.rwth-aachen.de> writes
>McLion <@> wrote:
>
>> And like I already wrote before: The Controller type and it clock
>> frequency is 'given' and not changeable.
>
>And right there is your problem.  You let things be "given" to you by
>people who don't know what they're doing.
>

That is a little unfair. You don't know why the clock frequency is
fixed.

The Keil web site has a very good  calculator for doing baud rates. It
is useful because it shows you all the possible ones  on a wide range to
clock frequencies

-- 
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
\/\/\/\/\ Chris Hills  Staffs  England     /\/\/\/\/
/\/\/ chris@phaedsys.org      www.phaedsys.org \/\/\
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/

McLion <@> wrote:

> And like I already wrote before: The Controller type and it clock
> frequency is 'given' and not changeable.

And right there is your problem.  You let things be "given" to you by
people who don't know what they're doing.

-- 
Hans-Bernhard Broeker (broeker@physik.rwth-aachen.de)
Even if all the snow were burnt, ashes would remain.

"abhay" <abhaym244@gmail.com> schrieb im Newsbeitrag 
news:1155126124.612700.246930@m79g2000cwm.googlegroups.com...
>i worked on 8051 time back.but i think it can support greater baud
> rates.try with changing configuration of smod in pcon register.
> however why dont u try with newer versions of 8051 variant.

I know it can do higher baudrates, that's not the issue.
And like I already wrote before: The Controller type and it clock frequency 
is 'given' and not changeable.
Therefore, i will use 9600.

Best regards,
Franz 

i worked on 8051 time back.but i think it can support greater baud
rates.try with changing configuration of smod in pcon register.
however why dont u try with newer versions of 8051 variant.

"McLion" <@> wrote in message news:44d9aabe$1_2@news.tiscalinet.ch...
> Unfortunately, for this project, the Controller is 'given'.
> And this Syntek seems to be sort of 'dumb'. It has a Timer2, but it can 
> not be used as baudrate source for the UART.
>
> Thanks anyway.
> Have a nice day!
> Franz
Well, if you can't change the 13 MHz to give you a faster "standard PC
baudrate" have you considered running a non-standard baudrate at the PC end?

If you can't do that either, how about putting a baud rate converter/buffer
in between (many two UART development boards could be belted in to shape to
do this in less than a day).

If both of these are too much trouble, too, you may not need a higher baud
rate as much as you think you do.

Cheers,
Alf