Forum Discussion

PRolp's avatar
PRolp
Icon for New Contributor rankNew Contributor
7 years ago

Can't connect to JTAG on EP4CE6 Mini Board

I'm trying to use this board but failing to connect to JTAG on it, either via the command line jtagconfig or via Quartus. https://www.ebay.com/itm/Altera-EP4CE6E22C8N-Mini-FPGA-Board-Cyclone-IV-/1120...
ak6dn's avatar
ak6dn
Icon for Regular Contributor rankRegular Contributor
7 years ago

Product ID is dependent on Vendor ID. So even if the Product ID is the same, if the Vendor ID is not correct, it will not be detected.

On my Terasic FPGA board that implements an embedded USB Blaster, I see this:

Device Descriptor:

bcdUSB: 0x0110

bDeviceClass: 0x00

bDeviceSubClass: 0x00

bDeviceProtocol: 0x00

bMaxPacketSize0: 0x08 (8)

idVendor: 0x09FB (Altera)

idProduct: 0x6001

bcdDevice: 0x0400

iManufacturer: 0x01

iProduct: 0x02

iSerialNumber: 0x03

bNumConfigurations: 0x01

Same data for my standalone Terasic USB Blaster clone. So unless you can change to the correct Altera Vendor ID in the hardware (0x09FB) OR change your USB driver install files to look for your different VendorID (0x0403) your hardware will not be recognized.