Altera Nios Development Board - Manual (Page 38)

1–30 Altera Corporation
Nios Development Board Reference Manual, Cyclone Edition December 2004
JTAG Connectors
Figure 1–22. JTAG Connector (J24) to Cyclone Device
Figure 1–23. JTAG Connection to Download Cable
The Cyclone 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.
JTAG Connector to EPM7128AE Device (J5)
J5 connects to the JTAG pins (TCK, TDI, TDO, TMS, TRST) of the
EMP7128AE device (U3) as shown in
Figure 1–24 . Altera Quartus II
software can perform in-system programming (ISP) to reprogram the
EMP7128AE device (U3) with a new hardware configuration via an
Altera download cable.
1 Note that the orientation of J5 is rotated 180
°
compared to J24.
J24
Pin 1