Appio Module Connectors - Spectrum Digital AppBox C21 User Manual

3.1.4 AppIO Module Connectors

The AppBox C21 CPU Board has 3 connectors which allow the AppBox C21 to be customized to meet
specific application requirements. By using function specific AppIO Modules, the user can tailor their system
configuration to meet their unique requirements. The AppIO Modules can be plugged into any of the
3 connectors (EXT1, EXT2, EXT3). These 3 connectors are 20 pin, 2 x 10 double row, right angle
connectors with pins on 0.1 inch (2.54 mm) centers.
Note: The user should be aware that several signals from the AppBox C21 CPU are shared and present on
all 3 connectors. If the signals are used by one connector (AppIO Module) they should not be used on the
other connectors.
The following diagram shows the physical layout of the EXT1, EXT2, and EXT3 connectors.
Pin 19
Pin 1
Pin 20 Pin 2
Circuit Board
AppBox C21 CPU Board AppIO Module Connector
(card edge view)
AppBox C21 System User's Guide 15
AppBox