Achronix Bitporter - Manual (Page 19)

Connecting the Bitporter Pod Connecting the Bitporter Pod
Bitporter User Guide www.achronix.com PAGE 13
The Bitporter chooses between its Ethernet interface and its USB interface based solely upon
whether DC power is being provided at the “+5V DC” jack.
If DC power is being provided, then only the Ethernet interface is active, and the USB
interface is ignored by the pod, even if no Ethernet cable is plugged in.
If no DC power is being provided, and the pod is connected to a powered USB port, then the
USB interface is active, and the Ethernet interface is ignored, even if the Ethernet cable is
plugged in.
Since the pod requires power, if the pod is not connected to either the DC power cable or a
powered USB port, the pod will not work. (The Bitporter will not work when connected to
Unpowered USB ports.)
Important! Errors may be reported when both the USB cable and the DC power cable are connected, at
least from the USB‐connected PC. That PC may attempt to connect via the USB interface, but since the
Bitporter itself is ignoring that interface, the connection protocol can fail in unusual ways. To avoid
problems, do not connect both DC power and USB simultaneously.
Connecting the Bitporter Pod via USB
Before connecting the Bitporter pod, please observe the following:
• Do not plug in the Bitporter USB cable until after the software installation (see
Chapter 2 – “Software and Driver Install” ).
• When using the USB interface, do not plug in the DC power cable. The DC power cable
is only used for the Ethernet interface. When using the USB interface, all power to the
Bitporter pod is provided through the USB cable.
Note: When the DC power cable is plugged into the Bitporter, the Bitporter ignores the USB
interface and only utilizes the Ethernet interface.
• Be sure to have the appropriate USB drivers installed. See Chapter 2 – “Software and
Driver Install” for details.
Windows XP
To connect the Bitporter pod to the target hardware:
1. Turn off the power to the target hardware.
2. Connect one end of the JTAG flat ribbon cable to the target JTAG connector. The red
strip is pin 1.
Note: If the target JTAG connector is not keyed, the target’s User Guide will specify the location
of pin 1 on the target JTAG connector.
3. Connect the other end of the JTAG flat ribbon cable to the Bitporter pod. The plug is
keyed.
4. Connect the USB cable to the host PC.
5. Connect the USB cable to the Bitporter.
6. (Only expected the first time the Bitporter is plugged into the USB port:)
When prompted by the Found New Hardware Wizard, click Next > (
Figure 3‐1 ).