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JTAG UART Data Rate

Altera_Forum
Honored Contributor II
1,558 Views

Hi, 

I'd like to know which is the data rate of JTAG UART??? 

 

Regards
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4 Replies
Altera_Forum
Honored Contributor II
310 Views

JTAG bit rate is 6 MHz with USB Blaster, effective JTAG UART data rate will depend on the transmitted block size due to the JTAG and VJTAG overhead.

Altera_Forum
Honored Contributor II
310 Views

What do you mean as "trasmitted block size"??? do you refer to data packet size??? if it is so...I think..I'm gonna use 8bit data packet.....

Altera_Forum
Honored Contributor II
310 Views

The JTAG UART data rate depends on how you put data through it. On standard USB-Blaster it can get up to about 1Mbit/s if you send enough data to keep it busy. 

 

You have to have code on the target which services it quickly enough though especially on host->target transfer. If the target can't keep up then the host slows to a crawl because of the number of retransmits it has to do.
Altera_Forum
Honored Contributor II
310 Views

Please use the general Nios II forum for questions like these. This is the C-to-Hardware accelerator section. Moving this and the other threads that don't belong here over.

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