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RE: [N8VEM-S100:5614] S100 Serial IO Design Question
Here us some baseline references and design materials.
I am going to reference the Sparkfun and FTDI cables (USB to UART) part numbers and
FTDI TTL-232R-5V cable, here is the Data Sheet.
SparkFun DEV-09718, +5 V USB cable (their Chinese import version of FTDI cable)
The 6 wires at the end of the cable are terminated in a 0.1" female SIL connector
(Molex 50-57-9006) commonly found as a interface access on many breakout boards.
The Spakfun cable wires in the SIL are Color Coded using the resistor color hierarchy.
1 - BLACK : GND
2 - BROWN : CTS
3 - RED : Vcc (In this case 5 VDC)
4 - ORANGE : TxD
5 - YELLOW : RxD
6 - GREEN : RTS
Hope this helps get some designer started.
The other option for USB incorporation is to actually place the SSOP-28 (FT-232RL) USB-UART IC on the PC board,
THEN you can use the PC motherboard standard (4-pin or 5-pin SIL) for USB 2.0 expansion ports. Those cables are readily available for the PC marketplace.