Software and Cable Interface

---

iMPACT allows for both automatic and manual cable connections.

Cable Auto Connect (Automatic)

Select Output Cable Auto Connect if you want the software to scan for the presence of a cable and automatically establish communication. Cable information is presented in the status bar.

If you select any operation that requires a cable, such as Program or Initialize Chain, without first selecting a cable connection, iMPACT will attempt to auto connect.

Cable Setup (Manual)

After connecting the cable to download and verify, power your target board to enable the software to communicate with the cable and start iMPACT. You can then set the cable options manually with the following steps:

1. Select Output Cable Setup to display the Cable
   Communication Setup dialog box, shown in the following figure.

Figure 2-1 Cable Communication Setup Dialog Box

2. In the Communication Mode field, select the cable type that you installed for downloading. The Parallel Cable is supported for the PC only.
3. In the Port Name list box, select the port to use for downloading and readback. If the port name you want is not listed, select the blank name from the list box and type in the new port name. This list box saves up to two user-specified port names.

The Port Name list box contains a list of valid ports for the
platform, as shown in the following table. If you selected the
MultiLINX Cable, the USB port is displayed. If you selected a serial cable, the serial ports are displayed. If you selected a parallel cable, the parallel ports are displayed.

Table 2-3 USB, Serial, and Parallel Ports

Platform	USB Ports	Serial Ports	Parallel Ports
Sol	none	/dev/ttya, /dev/ttyb	not supported
HP 10.x	none	/dev/tty00, /dev/tty01 or /dev/ttya, /dev/ttyb	not supported
PC	USB	com1, com2, com3, com4	lpt1, lpt2, lpt3, lpt4

4. In the Baud Rate list box, select a communications baud rate between the cable and the host system. You cannot specify the baud rate for a parallel cable.

Communication speed between the host system and the Cable depends on host system capability. Refer to the "Valid Baud Rates" table for a list of valid baud rates.

5.   Click OK to accept the selections.
iMPACT will attempt to connect to the cable.

Resetting the Cable

To reset internal logic of the cable after a power glitch, select Output Cable Reset to reset the internal logic of the cable. The cable is reinitialized and the proper baud rate is set.

Reset your cable if you experience a power failure to the target device board.

Disconnecting the Cable

To disconnect the cable connection, select Output Cable Disconnect.

Note You will need to disconnect the cable if you wish to use the same cable in a different configuration mode. For instance, if you start using the parallel cable in boundary-scan mode, then wish to use it for Slave Serial configuration, you will first have to disconnect it in boundary-scan and reconnect it in Slave Serial mode.