Analog Devices HPUSB USB and HPPCI Emulator Users Guide Rev 32

HPUSB, USB, and HPPCI Emulators User’s Guide 1-7  Getting Started
when connected to a session or when the ICE Test utility is used.

At all other times, the LED should be off.
For custom processor boards still in design, refer to the Engineer-to-Engi-
neer Note, Analog Devices JTAG Emulation Technical Reference (EE-68), 
available from the Analog Devices Web site. This document is a technical 
reference for implementing the JTAG interface on your target.
Now the emulator hardware is ready to be used...

JTAG Frequency Selection
1-8 HPUSB, USB, and HPPCI Emulators User’s Guide
JTAG Frequency Selection
USB-ICE emulators, high-performance PCI-ICE, and high-performance 
USB-ICE emulators support a JTAG clock operation up to 50 MHz. 
Not all frequencies listed above are supported for all processor fam-
ilies. The displayed frequencies depend upon the processor family.
There is a relationship between the JTAG frequency and core clock fre-
quency of the processor. Typically, the core clock runs at a...

HPUSB, USB, and HPPCI Emulators User’s Guide 1-9  Getting Started
Figure 1-2 and Figure 1-3 show the JTAG Frequency Selection dialog 
box. 
Figure 1-2. HPUSB-ICE JTAG Frequency Selection Dialog Box
Figure 1-3. HPPCI-ICE JTAG Frequency Selection Dialog Box 

JTAG Frequency Selection
1-10 HPUSB, USB, and HPPCI Emulators User’s Guide The tests listed in the Status box are run when you click Te s t in the JTAG 
Frequency Selection dialog box. The blue arrow points to the current fre-
quency. The arrow does not change after you run the tests because Cancel 
goes back to using the frequency pointed to by the blue arrow. To use 
a different frequency, select the appropriate frequency from the list and 
click Te s t. Click OK to use the frequency that is...

HPUSB, USB, and HPPCI Emulators User’s Guide 1-11  Getting Started
HPPCI JTAG I/O Voltage Detection
The mode of operation supported by the PCI emulator is dependent on 
the connection method used for the 14-pin JTAG header on your target. 
Table 1-2 shows how the target JTAG header connects for legacy and auto 
detection modes.
HPUSB/USB Legacy Mode
Legacy mode is used for older targets that do not provide a target VDDIO 
input for automatic voltage detection by the emulator. In this mode, the 
voltage...

HPPCI JTAG I/O Voltage Detection
1-12 HPUSB, USB, and HPPCI Emulators User’s Guide
HPPCI-ICE Legacy/Auto Detection Mode
The factory default for the pod shown in Figure 1-4 is legacy mode. For 
more information about available modes, refer to “Auto Detection Mode” 
on page 1-14. 
In order to modify the factory default setting, remove the four screws on 
the bottom of the plastic enclosure. When opening the case, first remove 
the top of the enclosure with the top facing up. This must be done to 
ensure...

HPUSB, USB, and HPPCI Emulators User’s Guide 1-13  Getting Started
Legacy Mode (Factory Default Setting)
Legacy mode is used for older targets that do not support voltages less 
than 3.3V and do not provide an IOVDD input for automatic voltage 
detection by the pod. Consequently, the emulator in legacy mode is used 
for all previously designed 3.3V and 5V target boards. The HPPCI-ICE is 
3.3V compliant and 5.0V tolerant in this mode and accepts both 3.3V 
and 5.0V signals but only drives 3.3V CMOS level...

HPPCI JTAG I/O Voltage Detection
1-14 HPUSB, USB, and HPPCI Emulators User’s Guide
Auto Detection Mode
Auto detection mode is recommended for all newly designed target 
boards. This mode supports 1.8V, 2.5V, 3.3V, and 5V target boards. 
PCI-based emulators are 1.8V, 2.5V, and 3.3V-compliant in auto 
detection mode. This means that the emulator can accept 1.8V, 2.5V, and 
3.3V signals and can also drive the respective 1.8V, 2.5V, and 3.3V 
CMOS level signals. The emulator is also 5V tolerant....

HPUSB, USB, and HPPCI Emulators User’s Guide 1-15  Getting Started
is in auto detection mode, or to change the emulator to auto detection 
mode.
Figure 1-7. Auto Detection Switch Setting for HPPCI-ICE Pod 

Troubleshooting and Warranty
1-16 HPUSB, USB, and HPPCI Emulators User’s Guide
Troubleshooting and Warranty
To provide comprehensive troubleshooting advice and warranty 
information for all emulator and EZ-KIT Lite products, Analog Devices 
maintains an Engineer-to-Engineer Note. Emulator and EZ-KIT Lite Eval-
uation System Troubleshooting Guide (EE-175) is available online at: 
http://www.analog.com.
This EE-Note can be used to resolve most installation, connection, and 
software issues affecting the...