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Altera_Forum
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12 years ago

inductor value in usb blaster and what is CPLD ISP part no

Hi, I'm currently building a low cost FPGA board for my school project. Referencing to DE0 schematic diagram for USB Blaster circuit: 1) What is the value of L1 & L2? and what does BEAD me...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Hi:

1: L1 and L2, you need to reference the Build of Materials (BOM) for the DE0 board. It should give you a part number. Those are Ferrite beads. Typically they are surface mount devices in a 0603 or 0402 package on these boards.

2: Apparently nReset is not used in their design. They tied it off, but you could do with it what you want. I like a push button if space is not an issue.

3: The CPLD_ISP is a standard 10 pin header, used to connect a USB-blaster to the board to initially program the CPLD.

Pete