Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

The win7 device manager detects nothing when JTag is connected to laptop

I tried to use the JTag cable by connecting it to the USB port of my laptop. By following the instruction of driver installation: https://www.altera.com/support/support-resources/download/driver...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

You didn't mention a specific USB "cable". Is it Altera USB Blaster? Or any third party product?

Presume you have checked correct operation of the USB port with other USB peripheral.

Similarly you can check the cable, although is unlikely to become defective.

An USB Blaster that has lost it's configuration data might appear as FTDI serial bridge under COM&LPT devices.

You may want to check the USB device enumeration activities during plug-in with a diagnostic tool, e.g. a recent Wireshark version.