Now, I'm not an expert of jtag but it looks quite strange that TCLK would not tick while data is sent throught TDI.
![altera usb blaster pinout altera usb blaster pinout](http://www.terasic.com.tw/wiki/images/4/4f/Ubt_pin_define.jpg)
The third figure gives an overall of the process. So I went ahead and hooked up my DSO to the four JTAG pins and got some waveforms obtained while trying to get quartus recognize my cpld (Auto Detect button, second attached figure). I have tried changing USB port (3.0 and a 1.0 in the front panel, and a 3.0 in the back panel directly connected to the mobo).
ALTERA USB BLASTER PINOUT SOFTWARE
Actually, in the software I selected EPM7032AELC44-10 whereas mine has an additional N at the end, though I don't think this can make a difference. I'm sure my quartus (ver II 13.0) has support to the device because I got to choose it during the new project wizard. The first attached figure shows how I wired it all (I found the pullup/down res configuration from the schematic of the chinese FPGA devboard where my usb blaster came from). There are 10 pins but 3 of them are NC and one is a doubled GND. I've also found the pinout of the JTAG connector from the USB blaster. I'm providing 3.3V to one VCC pin of the CPLD and using common ground for my PSU, CPLD and USB Blaster JTAG. Now I found all those pins on my CPLD pinout.
![altera usb blaster pinout altera usb blaster pinout](https://www.waveshare.com/img/devkit/USB-Blaster/JTAG_header__200.jpg)
![altera usb blaster pinout altera usb blaster pinout](https://etstore.in/wp-content/uploads/2020/12/71hKYlXI06L._SL1500_.jpg)
1149.1" interface, which would be TDI,TDO,TMS,TCK. I tried a simple breadboard setup to program the cpld with altera quartus without success.įirst, the only useful information about programming in the CPLD datasheet is that it complies to the "industry-standard 4-pin IEEE Std. I already have at home one of those cheap clones altera usb blaster with JTAG output. I recently bought a bunch of Altera MAX 7000A CPLDs on RS components in the plcc44 package.