How to make cables for ISP programming

ISP support enabled in any circuit with one dedicated port.

Just like 3 pin or 4 pin connector debug port or any input port which help to communicate between main processor and flash device. 

Main board manufacturer give debug support in any one port, so this images helps to make cables for ISP PROGRAMMING. 

eMMC ISP lines

For eMMC dump read and write connect thin wire, maximum length less than 6 inch as shown in image.

RX / TX debug lines

From Rx-Tx debug line make cables for ISP supported ports.

Support in VGA PORT

Using 2 male 15 pin D-Sub connectors create connections 
LINE 1 – Pin no. 6, 12 and 15
LINE 2 – Pin no. 4, 6 and 11  

Support in HDMI PORT

Using 2 male Standard A type HDMI connectors create connections 
LINE 1 – Pin no. 15, 16 and 17
LINE 2 – Pin no. 2, 14 and 17  

Support in USB PORT

Support in 3.5MM headphone PORT

Support in USB to USB

Normally use for AMLOGIC processor Main Board

Support in USB to UART Dongle

Using USB2UART dongle and male 15 pin D-Sub connectors create connections 
LINE 1 – Pin no. 6, 12 and 15
LINE 2 – Pin no. 4, 6 and 11