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Does the USB TAP emulator support target signal levels at 5V?

文俊邵 — Mon, 23 Mar 2015 02:31:21 GMT

Does the USB TAP emulator support target signal levels at 5V?

Re: Does the USB TAP emulator support target signal levels at 5V?

trytohelp — Tue, 24 Mar 2015 11:22:17 GMT

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
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Re: Does the USB TAP emulator support target signal levels at 5V?

trytohelp — Tue, 24 Mar 2015 14:24:39 GMT

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.

Re: Does the USB TAP emulator support target signal levels at 5V?

TICS_Fiona — Wed, 25 Mar 2015 10:22:43 GMT

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

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