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5.2
User Interface
User may have to adjust the target system as follows:
•
The emulator's user system interface is provided with pull-up resistors and/or a buffer, causing the
signals to be delayed slightly.
•
The pull-up resistors will change high-impedance signals to high level signals.
•
The Analog to Digital conversion's resolution will have a slight degradation.
•
Load capacitance of the emulator as compared to the actual chip will be larger.
•
Crystal oscillator can only used if the actual footprint user cable is used (there is an oscillating
circuitry built on-board). If user uses the direct method of connecting to the target system, the actual
clock signal has to be connected to the EXTAL pin (NOTE: there is no XTAL pin).
•
If user uses the direct connection method, the signal (CABLE_IN_N) has to be connected to ground.
Please refer to section 6 for the details of user interface circuitry
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