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.
ADSP-21371 - Vdd pin
Started by ●February 2, 2008
Reply by ●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 ●February 3, 20082008-02-03
Hi Al, Al Clark napisa�(a):> Roman Rumian <usun_torumian@agh.edu.pl> wrote in news:fo2jmr$1ml$1 > @news.agh.edu.pl: > >> Hi friends, >> >> do anybody knows, where the Vdd pin (voltage ?) is described in >> ADSP-21371 datasheet or any other document ??? >> > > The core supply is 1.2V, the IO supply is 3.3Vok, so we have Vddint and Vddext pins, but where are described separate Vdd pins ?? I looked at 21375 evm module schematic diagram, and Vdd pins are connected to Vddint supply, but why ? Thank you. :-) Roman Rumian
Reply by ●February 4, 20082008-02-04
Roman Rumian <usun_torumian@agh.edu.pl> wrote in news:fo42iv$abi$1 @news.agh.edu.pl:> Hi Al, > > Al Clark napisa�(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.