Hi,

You may have missed this, published about a year ago on www.gumstix.net:
PCN2009-3: Change of pin 46 on Overo J4 connector
Notice Date: January 2009
Effective Date: January 2009

As of version 2106 of the Overo Earth, pin 46 on connector J4 has been changed to be 4030GP2_N_MMC3_CD.
Prior to that version, there had been an error that labeled the pin as GPIO49 when in fact it had been GPIO149.

--Gordon


I've also encountered this Gumstix Overo J4 pin naming discrepancy.  I
checked both the Earth & Water (OMAP 3503 and 3530, respectively), and
they're consistent relative to the incorrect MMC3_WP identifier.

In my custom Overo carrier board schematic I'm only assigning those Gumstix
function names (i.e., net names for J1, J4) that will be used in the design,
with a (Mode n) suffix.

For this pin that you're identifying, I'll just allocate it as
UART1_CTS_(MODE0) ... and punt on use of GPIO_150 altogether.  On J4, its
pin grouping makes sense as it's in close proximity to UART1_RX and _TX.

Steve
NY



Next To Nobody wrote:
  
Connector J4 listed on the gumstix website lists the following:

http://www.gumstix.net/Hardware/view/I/O-connectors-cabling/Gumstix-Overo-70-pin-connector-J4-features-Extended-Memory-Bus-and-MMC-signals/112.html

Pin 46: GPIO49_MMC3_CD
Pin 47: GPIO150_MMC3_WP

Is this is a mistake?

There is no reference in the TI TRM manual for MMC3_WP and MMC3_CD
signals.

Plus the GPIO number 49 seems to be out of place. Maybe it is 149?

The TI TRM manual shows:

GPIO149 as UART1_RTS
GPIO150 as UART1_CTS

Can this be confirmed?

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