Altera Nios Development Board - Manual (Page 40)

2–32 Altera Corporation
Nios Development Board Reference Manual, Stratix II Edition July 2005
JTAG Connectors (J24 & J5)
Figure 2–19. USB Blaster Connected to Stratix II JTAG Connector
The Stratix II device’s JTAG pins can also be accessed via the Mictor
connector (J25). The pins of J24 are connected directly to pins on J25, and
care must be taken so that signal contention does not occur between the
two connectors.