In addition to Pascal's answer ...
Please refer to the section "Electrical Characteristics" in the User Guide for the target signal level, and appendix A~E for JTAG signal description:
http://cache.freescale.com/files/soft_dev_tools/doc/user_guide/USBTAPUG.pdf
Fiona Kuang
Technical Information & Commercial Support
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
Hi,
Just contacted the Run Control Team (in charge of USBTap).
• Automatically supports target signal levels from 1.8V to 3.3V.
That’s the range designed for.
5V would be out of range.
Have a great day,
Pascal
Freescale Technical Support
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
Hi,
This is an extract of the USB TAP Users Guide.pdf manual included in all installations:
+++++++++++++++++++++
Product highlights
The USB TAP probe has these features:
• Supports the following systems: Power Architecture processors, StarCore processors,
56800 Hybrid Controllers (processors and microcontrollers), and ColdFire™
processors.
• Supports all CPU core speeds.
• Lets you control and debug software running in-target, with minimal intrusion into
target operation.
• Lets you debug code in cache, ROM, RAM, and flash memory.
• Provides high performance:
• Split-second single-step execution.
• Capable of download speeds greater than 12 MB per minute from host to target.
NOTE
The actual download speed depends on the target
processor, the debug port's clock frequency, the
network speed, and the debugger.
• Supports one USB 2.0 connection.
• Supports both big and little endian byte-order.
• Automatically supports target signal levels from 1.8V to 3.3V.
...
+++++++++++++++++++++
Have a great day,
Pascal
Freescale Technical Support
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------