- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
I am in the early stages of designing an RF transmitter that will operate with a Cyclone II. Testing is being done on a Cyclone II Starter Development Kit (EP2C20F484), but the final hardware will use a very simple implementation of the EP2C8T144.
The design is a proof-of-concept, so only JTAG programming will be necessary (no need for non-volatile AS programming). We are assuming this implementation will not require external memory. A 10-pin header connected to the Cyclone II's TDO, TMS, TCK, and TDI pins, with appropriate pull-up and pull-down resistors will be used with a USB Blaster for programming. Are these assumptions correct? That is, no additional memory is required for JTAG, but non-volatile programming would require flash memory?Link Copied
3 Replies
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Yes, correct. You may want to provide an optional AS configuration memory, if you have sufficient free pins available (at least as dual-purpose). It can be programmed through JTAG indirectly without needing an extra programming connector.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
--- Quote Start --- Yes, correct. You may want to provide an optional AS configuration memory, if you have sufficient free pins available (at least as dual-purpose). It can be programmed through JTAG indirectly without needing an extra programming connector. --- Quote End --- By "indirectly" you mean the "flash-loader" design of Altera that can be programmed into the Cyclone?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Yes, the technique has been named JTAG indirect programming by Altera. The most simple solution for production purposes is to use the Altera default SFL image.
Reply
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page