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Jtag and debug access, Jtag – Eurotech Appliances ZEUS PXA270 User Manual

Page 62

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ZEUS Technical Manual

Detailed hardware description

© 2007 Eurotech Ltd Issue D

62

JTAG and debug access

Debug access to the PXA270 processor is via the JTAG connector J5. A standard ARM

20-pin header is used for the JTAG interface. See

J5 – JTAG connector

, page

79

, for

details.

Jumper JP7 needs to be inserted to enable the JTAG interface for PXA270 debug. See

section

JP7 - JTAG Enable

, page

95

for details.

The Macraigor Wiggler (see

www.macraigor.com/wiggler.htm

) and usb2Sprite (see

www.macraigor.com/usb2sprite.htm

) probes have been used to debug the PXA270

processor on the ZEUS. There are many other debug tools that can be interfaced to

the ZEUS for access to the JTAG Interface of the PXA270 processor.

In addition to the PXA270, there are two CPLDs (XC9536XL-CS48 and

XC9572XL-CS48) in the JTAG chain on the ZEUS. The BSDL files can be

found on the

www.xilinx.com

web site.