Nintendo 12-pin multi out definition

abey

SNES Multi-out cable connector pins.

These are numbered the way Nintendo did, and the view is looking back "into" the connector on the CABLE.

      1     3     5     7     9    11

      |     |     |     |     |     |
      |     |     |  _  |     |     |
     --------------------/ \--------------------
    /                              \
   |                                |
   |                                |
    \                              /
     -------------------------------------------
      |     |     |     |     |     |
      |     |     |     |     |     |

      2     4     6     8    10    12



      Pin    Description
      ===    ===========
      1     Red analog video out  (1v DC offset, 1vpp video into 75 ohms)
      2     Green analog video out (1v DC offset, 1vpp video into 75 ohms)
      3     Composite H/V sync out (1vpp into 75 ohms)
      4     Blue analog video out  (1v DC offset, 1vpp video into 75 ohms)
      5     Ground
      6     Ground
      7     Y (luminance) signal for S-VHS (1vpp into 75 ohms)
      8     C (chroma)   signal for S-VHS (1vpp into 75 ohms)
      9     NTSC composite video signal (1vpp into 75 ohms)
      10    +5v (Could be just a high logic signal)
      11    Left channel audio out
      12    Right channel audio out
Additional Notes:

As seen above, the SNES does have RGB capability. I was able to get a stable raster on my NEC MultiSync "classic" using the RGB and sync pins. However, the video levels are not RS-170 compatible. The DC offset needs to be filtered out with some large capacitors and the peak-to-peak video amplitude may need to be reduced to 0.7v by using a lower load impedance than 75 ohms. The Y/C (S-VHS) signals *appear* to be directly usable, but tests cannot be made until I find the pinouts for the S-VHS connector on my TV.


字体的关系，图可能没对齐，但是应该能看懂得。
从这张图可以看出，任天堂的模拟输出端是带RGB输出的，只是不知道ngc用到没有？ 而且这个RGB输出是有单独的同步信号的（比sony厚道多了）。市面上的分量线应该就是用这些RGB输出搞的，只是这个输出是有缺陷的，如文中所述，峰值电平需要额外的阻抗控制，可能这就是组装分量不稳定的原因所在。至于那些不起作用的S线，应该也可以从这里找到答案。

相信这张图对动手能力强的朋友和买到假S线的朋友都是有帮助的，最后鄙视一下游戏厂商们，av输出端口针脚定义几乎完全一样却不搞统一，真tmd目光短浅！！！！
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Stormxx

估计看的懂的人不多`~楼主辛苦了