cosmosuave Posted March 10, 2014 Report Share Posted March 10, 2014 More questions arise as I am completing my SEQV4 after looking at the documentation I am trying to figure out which jumper connection on MBHP_CORE_LPC17 does the MIDI Quad IIc connect to? I need to get the right connectors for this.. Is it J4B on the core or pins on J5B or a combination of both? Thanks... Brian Quote Link to comment Share on other sites More sharing options...
Shuriken Posted March 10, 2014 Report Share Posted March 10, 2014 (edited) The LPC17 Documentation says: J4A IIC port. Interface to BankSticks or to MBHP_IIC_* modules like MBHP_IIC_MIDI. J4B A second IIC port, which can also be used as an additional MIDI IN/OUT port (MIDI IN4/OUT4) if enabled in MIOS32 (add "#define MIOS32_UART_NUM 4" to the mios32_config.h file). MIDI IN4 will be available on the J4B.SC. If a 6N138 based optocoupler circuit should be connected, replace the 2.2k pull-up R10 by 1k, or add a second 2.2k in parallel to get 1.1k effectively. MIDI OUT4 will be available on the J4B.SD pin, it isn't required to remove R9 if already soldered - it doesn't hurt. So either J4A or if that one in use then you can use J4B. Edited March 10, 2014 by Shuriken Quote Link to comment Share on other sites More sharing options...
cosmosuave Posted March 10, 2014 Author Report Share Posted March 10, 2014 J4B it is then... Thank you... Quote Link to comment Share on other sites More sharing options...
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