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Jtag connector to epm7128ae device (j5), Figure 1–22, Figure 1–23 – Altera Nios Development Board User Manual

Page 38

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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