Sundance SMT130 v.1.0 - Manual (Page 21)

Page 21 of 46 SMT130 User Manual V1.0
JTAG chain can be automatically connected through the stack by inserting a JTAG
coupling connector. If this coupling connector is inserted into the stack, the Lower
SMT130 controls the JTAG chain. All other TBCs in the PCI-104 stack will be
disabled. Any software used to access the TBC must target ONLY the lowest
SMT130 in the stack. If the TJAG coupling connectors are omitted from the stack,
each TBC operates independently.