Updated README

README.md

@@ -1 +1,23 @@
-# ac922interposer
+# ac922interposer
+
+The purpose of this design is to enable the AC922 to accept a DC-SCM v1.0 hardware management module.  This enables a developement
+platform for software development.
+
+For connection with a DC-SCM, the DC-SCM v1.0 release design specifies the connector as an SFF-TA-1002 compliant 4C+ connector. The 4C+ connector is a 4C compliant connector with an additional 28-pin “OCP bay” defined in the OCP NIC 3.0 specification.  The right-angled variety allows for the DC-SCM to lay within the BMC cage assembly.  This can be implemented with TE 2336568-1.
+
+References:
+
+DC-SCM 0.95 Draft Specification:
+https://www.opencompute.org/documents/ocp-dc-scm-spec-rev-0-95-pdf
+
+DC-SCM 2.0 Draft Specification:
+https://drive.google.com/file/d/1UkFgAFKh8qz4mAXdvodYsW0fg8XhyVf2/view?usp=sharing
+
+AC922 Specification:
+see OpenPower website
+
+SFF-TA-1002 Protocol Agnostic Multi-Lane High Speed Connector
+https://members.snia.org/document/dl/27231
+
+AntMicro Design Specification:
+https://github.com/antmicro/artix-dc-scm.git