Socket Type K

A UART serial line interface operating at TTL levels, with hardware flow control capabilities. Pin 4 (TX) is data from the mainboard to the module, and pin 5 (RX) is data from the module to the mainboard. These lines are idle high (3.3V), and can double as general-purpose input/outputs. Pin 6 (RTS) is an output from the mainboard to the module, indicating that the module may send data. Pin 7 (CTS) is an output from the module to the mainboard indicating that the mainboard may send data. The RTS/CTS are 'not ready' if high (3.3V) and 'ready' if low (0V). In addition, pins 3 is a general-purpose input/output, supporting interrupt capabilities.

Pinout

Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10
+3.3V +5V GPIO! TX (G) RX (G) RTS CTS [UN] [UN] GND


Legend:

GPIO

A general-purpose digital input/output pin, operating at 3.3 Volts.

! Interrupt-capable and software pull-up capable GPIO (the pull-up is switchable and in the range of 10,000 to 100,000 ohms).

[UN]

Modules must not connect to this pin if using this socket type. Mainboards can support multiple socket types on one socket, as long as individual pin functionalities overlap in a compatible manner, so that a pin from one socket type can overlap with a [UN] pin of another.

+3.3V Connection to the +3.3V power net.
+5V Connection to the +5V power net.
GND Connection the power ground net.

Connector Pin Numbering

Pins numbers for the male 10-pin connector standard Gadgeteer socket, as seen from above. In most cases, the ribbon cables will have the pin 1 conductor marked in red.

ConnectorPinNumbering_thumb_thumb_thumb

Last edited Mar 1, 2012 at 11:46 PM by nvillar, version 3

Comments

nvillar Mar 1, 2012 at 11:46 PM 
Well spotted, and thanks for pointing this out. The text has been corrected.

KennySpade Feb 15, 2012 at 1:32 AM 
The opening paragraph incorrectly lists Pin 3 as (TX) and Pin 4 as (RX). The table has the correct listing, with Pin 4 as (TX) and Pin 5 as (RX).