M0220SD-202SDAR1-S - how to connect to internal morherboard header?

bobah

• June 19, 2015 02:35

Hi, I was hoping to use M0220SD-202SDAR1-S VFD in my media center PC by connecting it to motherboard's internal Serial header - can I use the cable soldered onto the unit, or do I have to solder a different one on?

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  Paul_B

  • June 19, 2015 13:09

  Hello,
  
  To answer your question, yes you can use the linker cable as long as the pin-out matches your motherboards serial header.
  
  Please see page 16 in the displays datasheet regarding the pin-out and how to configure the jumper settings.
  
  http://www.newhavendisplay.com/specs/M0220SD-202SDAR1-S.pdf
  
  Hope this helps!
  
  
  
  

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  bobah

  • June 20, 2015 01:34

  Thank you, exactly. I am trying to make sense out of this table - it refers to "connector" with up to 14 pins, so I assume it is pinout of the holes on the VFD board? The S version of M0220SD-202SDAR1 module comes with a short 5-wire cable soldered to some of these holes (GND, Vcc, SI/SO, STB, SCK?), and is terminated with a 5-pin connector. Were can I find out pinout of that connector?
  
  On my motherboard, the serial header has two rows, one 5-pin and another 4-pin. It goes like this - first row:
  pin 1 - DCD (or NDCD B-)
  pin 3 - TXD# (or NSOUT B)
  pin 5 - Ground (or GND)
  pin 7 - RTS (or NRTS B-)
  pin 9 - RI (or NRI B-)
  
  Second row:
  pin 2 - RXD# (or NSIN B)
  pin 4 - DTR  (or NDTR B-)
  pin 6 - DSR  (or NDSR B-)
  pin 8 - CTS  (or NCTS B-)
  
  Connector from VFD *might* physically fit to one of the rows, but pinout couldn't possibly match - unlike DB-25 interface, there is no Vcc in motherboard connector, so I need to grab 5V somewhere else...
  
  Also, I am not so sure how to translate terminology used by mobo manufacturer with the terms used in VFD pinout above - where SI/SO, STB, SCK should be connected to? So confusing.
  
  Thanks

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  Paul_B

  • June 22, 2015 08:27

  Morning,
  
  Correct, this VFD display has a 14 pin connection (see picture attached). The 5-wire cable is soldered to Pin NO. 1,2,3,4,6
  
  Pin-Out:
  
  1. GND
  2. Vcc
  3. SI/SO
  4. STB
  5. SCK
  
  Please let me know if you need any additional help 

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  bobah

  • June 23, 2015 01:48

  Thank you, Paul.
  
  So all that is left for me is to find what pins on motherboard serial header to connect to what pins of VFD - where SI/SO, STB, SCK go to in the list below?
  
  pin 1 - DCD
  pin 2 - RXD#
  pin 3 - TXD#
  pin 4 - DTR 
  pin 5 - Ground (or GND)
  pin 6 - DSR 
  pin 7 - RTS
  pin 8 - CTS 
  pin 9 - RI
  

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