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I tried to send a 800*480 image throw the vjtag,here is the tcl:
puts " Begin to read..."
set run_width 0
set run_height $height
# puts
device_unlock
set pix_array(,$run_width) $pixel
incr run_width
# puts "The pixel is $pixel"
}
incr run_height -1
set run_width 0
puts "Line.......$run_height"
}
but the time to send all the data is so long,about 20min,during the process I use the oscilloscope to measure the TCK pin of the usbblaster,it is about 200kHz,the Virtual jtag megafuntion handbook noted: Note that TCK (a maximum 10-MHz clock, if using an Altera programming cable) provides the clock for the entire SLD infrastructure. And the usbblaster ii download cable user guide:The USB-Blaster II download cable has a default TCK frequency of 24 MHz. I catch the waves throw the signaltap, http://www.alteraforum.com/forum/attachment.php?attachmentid=12802&stc=1 the shiftting takes about 96 Ttck when translatting the 24 bits data,even though,the image has 800*480 = 384000 24bit datas, 384000*96 = 36864000,when the tck is 200kHz,it should takes about 36864000/200000 = 184s,about 3min, I don't know why the transmission is so slow,does anyone can help me?
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I tried to send a 800*480 image throw the vjtag,here is the tcl:
puts " Begin to read..."
set run_width 0
set run_height $height
# puts
device_unlock
set pix_array(,$run_width) $pixel
incr run_width
# puts "The pixel is $pixel"
}
incr run_height -1
set run_width 0
puts "Line.......$run_height"
}
but the time to send all the data is so long,about 20min,during the process I use the oscilloscope to measure the TCK pin of the usbblaster,it is about 200kHz,the Virtual jtag megafuntion handbook noted: Note that TCK (a maximum 10-MHz clock, if using an Altera programming cable) provides the clock for the entire SLD infrastructure. And the usbblaster ii download cable user guide:The USB-Blaster II download cable has a default TCK frequency of 24 MHz. I catch the waves throw the signaltaphttps://www.alteraforum.com/forum/attachment.php?attachmentid=12809 , the shiftting takes about 96 Ttck when translatting the 24 bits data,even though,the image has 800*480 = 384000 24bit datas, 384000*96 = 36864000,when the tck is 200kHz,it should takes about 36864000/200000 = 184s,about 3min, I don't know why the transmission is so slow,does anyone can help me?
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https://www.alteraforum.com/forum/attachment.php?attachmentid=12810 I am a beginner of this forum,the image in the thread is fuzzy,so i upload a new image
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