Analog Devices HPPCI, Руководство пользователя

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HPUSB, USB, and HPPCI Emulators User’s Guide 2-1
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2 HARDWARE DESCRIPTION
This chapter describes the hardware design of the USB- and PCI-based
emulators.
LEDs
HPUSB-ICE/USB-ICE LEDs
Four LEDs are located on the enclosure:
• 1.8V LED – Signifies that the ICE drives all signals at 1.8V
compliant levels.
• 2.5V LED – Signifies that the ICE drives all signals at 2.5V
compliant levels.
• 3.3/5V LED – Signifies that the ICE drives all signals at 3.3V
compliant levels.
• ENABLE – This LED is amber when the debugger is enabled. This
means that the emulator is driving the JTAG signals, and the con-
nector must not remove or plug onto a target when the light is
amber. When the LED is green, the JTAG signals are not being
driven, and it is safe to connect to a target. The green LED indi-
cates that the board is powered up but not in emulation mode.