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MPC8377 JTAG problem

Question asked by xiaolu liao on Oct 31, 2017
Latest reply on Nov 5, 2017 by alexander.yakovlev
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I use the Jtag downloader to see the attachment. MPC8377 can not be found correctly, please tell me those reasons will cause this result?
The configuration word is provided by CPLD and the MPC8377 is found to be properly configured. The clock is a. 667MHZ, using PCI host mode. The power supply is OK.