The RVI debug unit provides the hardware to enable a computer to control multiple JTAG capable devices. The unit has ports at one end for connecting to the host computer and to a power source. These ports are shown in the following figure:

The RST button is used to reset the RVI unit when required, and returns RVI to its power-up state. Using the RST button in this way does not reset the target. This button must not be confused with the Reset button that might be implemented on your target, located on the target board itself.

The LEDs at the bottom of the Ethernet port display information about Ethernet speed and activity:

The ports at the other end of the unit connect to the target hardware, and are shown in the following figure:

Cables are supplied to connect the run control unit to the host computer, and to the target hardware.

If the RVI unit detects an internal hardware or software failure from which it cannot recover, the four LEDs JTAG, STAT, CFAC and LVDS flash continuously. You must reboot RVI before you can continue using it. To do this, press the RST button.

During installation of an update or a patch, the CFAC LED lights up, denoting that Compact Flash Activity (CFAC) is taking place. While this is happening, you must not disconnect power from the run control unit, and must wait until this LED has extinguished. The CFAC LED also lights up when a debugger connects, and during Dynamic Host Configuration Protocol (DHCP) lease renewal.

The RVI unit contains an internal cooling fan that operates to control the internal temperature when necessary. The ventilation panels on the top and bottom of the RVI unit and the RVT unit must not be obscured.