Off Ramp 5 HDMI Pinouts ?

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arledgsc

  • Jr. Member
  • Posts: 7
Off Ramp 5 HDMI Pinouts ?
« on: 20 Dec 2013, 04:10 pm »
Hi Steve,

The RJ-45 I2S signals aren't working out that well with the Audio GD Master 7.  Too much variation in sound with cable type/length and even day to day with the same cable.  I would like to build an LVDS-to-LVTTL adapter board for the M7 and try the Off Ramp 5 HDMI output.  Where can I find the correct pinout of the Off Ramp HDMI port?   There is a lot of misleading information on the web about what signal goes on which pin of the 19-pin HDMI connector so need a definitive answer.  I can figure out most pins of the 19-pin HDMI interface but if you could add the pin numbers of main signals below would help.  Or point me to the correct information is much appreciated!  I looked at PS Audio and Wyred4Sound but found nothing definitive about what HDMI signals go on which pin.

HDMI Pinouts
MCLK+  = ?
MCLK-   = ?
LRCLK+ = ?
LRCLK-  = ?
SCLK+  = ?
SCLK-   = ?
SDATA+= ?
SDATA- = ?

audioengr

Re: Off Ramp 5 HDMI Pinouts ?
« Reply #1 on: 20 Dec 2013, 07:32 pm »
Here is the pinout:

MCLK+  = 10
MCLK-   = 12
LRCLK+ = 9
LRCLK-  = 7
SCLK+  = 4
SCLK-   = 6
SDATA+= 3
SDATA- = 1
Gnds - 2,5,8,11,17,20,21

Pin 19 should be pulled to +3.3V with a 1K resistor.

Steve N.

arledgsc

  • Jr. Member
  • Posts: 7
Re: Off Ramp 5 HDMI Pinouts ?
« Reply #2 on: 22 Dec 2013, 02:06 am »
Perfect.  Thank you kind sir!  Scott