Daft question from newbie (schematic diagram question)

hi all,


hope ok.. , yes regarding arduino mega.. have been looking @ copy of scematic, looking @ creating new items arduino, , basic arduino not enough.. now.. here schematic im looking at.

https://www.arduino.cc/en/uploads/main/arduino-mega-schematic.pdf

hope shows..

ok.. on right hand side of schematic, chip ic6, has 4 outputs/lines

pins 11,9,10,6

they go icon (i dont know) , says x3 above it..

what this? appears go no else on schematic, sort of connector on board. , there supposed 3 of them, have been looking @ arduino mega, can find no such connections on it.. missing something?

answers appreciated..

cheers
keith

hi,

first off, schematic refer mega board have ?

the current mega , many clone boards use atmega 16 u2 chip usb interface , has different layout.

regarding pins mention, if @ ft232 datasheet see device capable of communticating via several different methods, usb being one, others base on more direct usart lines rs232 etc.
probably x3 connector termiator keep diagram neat or possible future use.

http://www.ftdichip.com/support/documents/datasheets/ics/ds_ft232r.pdf

hth

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