JTAG External Modules (JEM) DIMM/SODIMM Socket Cluster Test
The primary function of the JTAG External Modules (JEM) for the DIMM/SODIMM Socket Cluster Test is to provide test access to off-board signals that otherwise could not be accessed by a JTAG test system and to strengthen the memory-independent JTAG testing for the assembly correctness of the almost full spectrum of the modern socket types, particularly (according to JEDEC_Std.21-C):
