Hello,
> I was just working on updates to a kernel module that would count pulses on
> pin 8 of the DIO1 header on a TS-7250 board. It looks like I have it working
> nicely (although I've only run the one test so far). My code is currently
> based on infomation from the manual rather than what is shown on the
> schematic.
>
> Page 26 of the ts-7250-manual-rev-2.1.pdf file has a table that shows the
> signal name for pin 8 of DIO1 as having the name DIO_8. The paragraph below
> it
> says that "DIO_8 is accessed via bit 1 of Port F in the EP302".
>
> On page 4 of the TS-7250 schematic (TS-7250 Rev. A, Rev: 1.0) dated Jan 25,
> 2005 it shows pin 8 of DIO1 as having the signal name of DIO_16. On page 1 of
> the schematic, DIO_16 is shown as connecting to pin 170 of the EP9301 which
> has the signal name of FGPIO_0.
>
> The schematic shows DIO_17 as connecting to bit 1 of port F and not DIO_16.
> The schematic and manual disagree on the signal names and to which port bit
> the header pin is connected.
There is an error in the EP9301 User's Guide, I don't have the manual in
front of me but the proper bit is bit 0 as documented in Technologic
Systems manual, you will find bit 1 is incorrect as documented in Cirrus
Logic's EP9301 User's Guide. The terminology in the schematic and in the
User's Manual does differ in some places as you have found although all
of the information is correct as far as I know.
--
Best Regards,
________________________________________________________________
Eddie Dawydiuk, Technologic Systems | voice: (480) 837-5200
16610 East Laser Drive Suite 10 | fax: (480) 837-5300
Fountain Hills, AZ 85268 | web: www.embeddedARM.com
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