User manual

MPLAB
®
REAL ICE
™
In-Circuit Emulator User’s Guide
DS51616B-page 114 © 2008 Microchip Technology Inc.
12.4 USB PORT/POWER
The MPLAB REAL ICE in-circuit emulator is connected to the host PC via a Universal
Serial Bus (USB) port, version 2.0 compliant. The USB connector is located on the
back of the pod.
The system is capable of reloading the firmware via the USB interface.
System power is derived from the USB interface. The emulator is classified as a high
power system per the USB specification, and requires 300 mA of power from the USB
to function in all operational modes (emulator/programmer).
Cable Length – The PC-to-emulator cable length for proper operation has been tested
for each driver board and is shipped in the emulator kit.
Powered Hubs – If you are going to use a USB hub, make sure it is powered. Also,
USB ports on PC keyboards do not have enough power for the emulator to operate.
PC Hibernate/Power-Down modes – Disable the hibernate or other power saver
modes on your PC to ensure proper USB communications with the emulator.
12.5 EMULATOR POD
The emulator pod consists of a main board enclosed in the casing with a port for two
optional driver boards (for standard or high-speed communication with a target). On the
emulator encloser are push buttons, indicator lights (LEDs) and a logic probe connector
interface.
12.5.1 Main Board
This component has the interface processor (dsPIC DSC), the USB 2.0 interface
capable of USB speeds of 480 Mb/sec, a Field Programmable Gate Array (FPGA) for
general system control and increased communication throughput, an SRAM for holding
the program code image for programming into the emulation device on-board Flash,
the external trigger logic, user interface push buttons and LED indicators.
The MPLAB REAL ICE in-circuit emulator system supports two types of interfaces to
the target processor. They consist of the standard driver board and an optional
high-speed driver board. These boards are inserted into the emulator pod via a card
guide.
Durability/insertion life cycle of the card guide: 10,000 cycles
12.5.2 Push Buttons
The push buttons have the following significance.
Note: The MPLAB REAL ICE in-circuit emulator is powered through its USB con-
nection. The target board is powered from its own supply. The emulator
cannot provide power to the target board.
Push Button
Related
LED
Description
Reset Status Push to Reset the device.
Function Status Halt – When running, push to put the emulator in the Break or
halted condition.