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T1020:Core not responding error in Codewarrior for T1024 based board

Question asked by Shalaka Shinde on Dec 28, 2017
Latest reply on Jan 31, 2018 by Yiping Wang



I have NOR flash on my T1024 processor based board.

Initially, in hard coded RCW stage, I am able to successfully flash the RCW to NOR Flash.

Then I change the POR configuration resistors to "boot from NOR flash" setting in order to flash u-boot image.


But I am getting an error saying "CCS: T1020: Core not responding"


Is there any particular reason for this?

Moreover, in hard-coded RCW configuration, 4.7k-ohm resistors are embedded in PCB.

Hence, while changing to NOR flash boot mode, I am just adding 800-ohm pull up or pull down accordingly. So my IFC POR lines are getting divided voltage (0.3V for low and 1.5V for high), but its within VIL/ VIH limits. (So should not be a problem I guess!)