Setting The Debug Port Clock Frequency; Connecting To Your Host Computer - Freescale Semiconductor metrowerks CodeWarrior User Manual

Setting up the USB TAP Emulator
Connecting to the Target and your Host Computer
5. Reconnect the USB cable to the USB TAP emulator.
6. Apply power to your target.
NOTE

Setting the Debug Port Clock Frequency

The debug port on your target is a synchronous interface clocked by the TCK or
DSCK signal. The base frequency is set by the debugger and can be adjusted with
preferences in the debugger.
NOTE
Some slow targets might not be able to operate at the initial default rate. Therefore,
you may have to adjust the debug port clock rate.
NOTE

Connecting to your Host Computer

Connect one end of your USB 2.0 Cable to a USB 2.0 port on your host computer or a
powered USB 2.0 hub. Connect the other end of the cable to your CodeWarrior USB
TAP emulator.
16
If you are using the USB TAP emulator with a PC running
Windows® NT/2000/XP, the first time that you connect the USB
TAP to the USB port, the following Windows pop-up dialog appears
in the system tray: Found New Hardware: CodeWarrior USB
TAP. Then shortly after this message is displayed, a Found New
Hardware Wizard dialog box appears. See
CodeWarrior USB TAP Device Drivers" on page 12,
how to navigate through this dialog box.
For directions on how to set the debug port clock frequency, please
see the CodeWarrior documentation.
Because of variations in the design of target systems, it is not
possible to guarantee that all systems can be operated at the
maximum debug port clock rates. These variations include circuit
impedances, trace lengths, and signal terminations. You may need to
select a lower clock rate to get reliable operation.
"Installing the
for details on
USB TAP Users Guide