Functional Description, Switching Schematic

C&H Technologies, Inc. <> 445 Round Rock West Drive <> Round Rock, TX 78681 <> www.chtech.com

3.0FUNCTIONAL DESCRIPTION

3.1OVERVIEW

A simplified switching schematic is shown in Figure 2.

NC = Normally Closed	No Connection: Pin 7, 19, 26
NO = Norm ally Open	No Connection: Pin 7, 19, 26
com = Comm on	CGND: Pin 14, 15, 30, 37, 44
Figure 2.	Switching Schematic

3.1.1 M-Module Interface

An M-Module interface allows communication between the M222 and the carrier module. The interface is an asynchronous 16-bit data bus with interrupt capabilities. The interface adheres to the ANSI/VITA 12-1996 Standard for The Mezzanine Concept M-Module Specification for MA modules.

3.1.2 ID EEPROM

An EEPROM holds sixty-four 16-bit words of M-Module ID data and VXI M-Module data. Refer Section 3.2.2 for more details.