Reply by Al Clark ●February 4, 20082008-02-04
Roman Rumian <usun_torumian@agh.edu.pl> wrote in news:fo42iv$abi$1
@news.agh.edu.pl:


> Hi Al,
> 
> Al Clark napisa&#4294967295;(a):
>> Roman Rumian <usun_torumian@agh.edu.pl> wrote in news:fo2jmr$1ml$1
>> @news.agh.edu.pl:
>> 
>>> Hi friends,
>>>
>>> do anybody knows, where the Vdd pin (voltage ?) is described in 
>>> ADSP-21371 datasheet or any other document ???
>>>
>> 
>> The core supply is 1.2V, the IO supply is 3.3V
> 
> ok, so we have Vddint and Vddext pins, but where are described separate 
> Vdd pins ??
> 
> I looked at 21375 evm module schematic diagram, and Vdd pins are 
> connected to Vddint supply, but why ?
> 
> Thank you. :-)
> 
> Roman Rumian
> 


I see what you are talking about. On the pin assignments, it shows Vddext 
and Vdd. This is a mistake. The Vdd should be labeled Vddint. There is no 
special Vdd.

The core voltage is 1.2V. 

Al Clark
Danville Signal Processing, Inc.
Reply by Roman Rumian ●February 3, 20082008-02-03
Hi Al,

Al Clark napisa&#4294967295;(a):

> Roman Rumian <usun_torumian@agh.edu.pl> wrote in news:fo2jmr$1ml$1
> @news.agh.edu.pl:
> 
>> Hi friends,
>>
>> do anybody knows, where the Vdd pin (voltage ?) is described in 
>> ADSP-21371 datasheet or any other document ???
>>
> 
> The core supply is 1.2V, the IO supply is 3.3V


ok, so we have Vddint and Vddext pins, but where are described separate 
Vdd pins ??

I looked at 21375 evm module schematic diagram, and Vdd pins are 
connected to Vddint supply, but why ?

Thank you. :-)

Roman Rumian
Reply by Al Clark ●February 3, 20082008-02-03
Roman Rumian <usun_torumian@agh.edu.pl> wrote in news:fo2jmr$1ml$1
@news.agh.edu.pl:


> Hi friends,
> 
> do anybody knows, where the Vdd pin (voltage ?) is described in 
> ADSP-21371 datasheet or any other document ???
> 


The core supply is 1.2V, the IO supply is 3.3V

Al Clark
Danville Signal Processing
Reply by Roman Rumian ●February 2, 20082008-02-02
Hi friends,

do anybody knows, where the Vdd pin (voltage ?) is described in 
ADSP-21371 datasheet or any other document ???

Regards

Roman Rumian

P.S Maybe FREESCALE could organise a seminar for AD staff, how to write 
technical documentation of microprocessors ?!
The ADSP processors documentation is the worse I ever red.