Search found 8 matches
- Thu Feb 22, 2018 7:16 pm
- Forum: XMOS Devices
- Topic: Xlinks with USB on the XU
- Replies: 10
- Views: 73136
Re: Xlinks with USB on the XU
Well, I'm still designing my 4-processor board, I have not the actual hardware and all informations I have come from the data sheet and the compiler warnings; they say you can't use both at the same time. Nevertheless I will keep the 5-bit links 4 and 7 wired to the chip on the PCB, because I could ...
- Thu Feb 22, 2018 10:30 am
- Forum: XMOS Devices
- Topic: Xlinks with USB on the XU
- Replies: 10
- Views: 73136
Re: Xlinks with USB on the XU
I found exactly the same problem. The ports used by the USB PHY overlap links 4 and 7 (and 3 if you connect it to tile 1). You can only put the PHY on tile 0 and use 2-bit links 0 and 3. Warning: the data sheet shows port 1J used for clock, while the USB driver assigns port 1C to it; who is right? (...
- Mon Oct 03, 2016 12:39 pm
- Forum: XMOS Devices
- Topic: Xmos link to FPGA
- Replies: 7
- Views: 12502
Re: Xmos link to FPGA
I can confirm that the xlink code on GitHub works fine, I use it daily between my XS1/XS2 and Altera/Xilinx FPGAs. I added 9-bit FIFOs to the input and output paths and access the link through two 16-bit registers. The management of control characters (HELLO,EOM..) and of credits is done in software...
- Thu Oct 08, 2015 10:56 am
- Forum: Q&A
- Topic: Error XN11199?
- Replies: 2
- Views: 2856
Error XN11199?
<t>Using xTIMEcomposer 14.1, I received an error XN11199 ("No bootmode attribute has been specified for Node xxx"). I was trying to define a network where an XU216 is booted via link0 from another similar chip.<br/> <br/> This error, and the 'bootmode' attribute, are undocumented. What does it mean?...
- Thu Oct 23, 2014 12:09 pm
- Forum: XMOS Devices
- Topic: FPGA, XN, Xscope and other stuff
- Replies: 4
- Views: 5424
Re: FPGA, XN, Xscope and other stuff
richard: following your suggestions I wrote an XN file which enables both links without errors and works (at least on Xscope, I will test the FPGA channel later but from the LEDs it seems OK). By the way, the package I used is called "xlink_fpga", it's not on GitHub, and I don't have a lin...
- Thu Oct 23, 2014 12:26 am
- Forum: XMOS Devices
- Topic: FPGA, XN, Xscope and other stuff
- Replies: 4
- Views: 5424
Re: FPGA, XN, Xscope and other stuff
segher: I eventually found the source of my troubles: see http://www.xcore.com/questions/2833/xs1-l16-master-reset-pcu-problem When designing my board I followed a FAULTY DATASHEET!! And I connected the PCU pins to ground.. of course it didn't work, the chip ignores the RST_N signal in these conditi...
- Wed Oct 22, 2014 1:49 pm
- Forum: XMOS Devices
- Topic: FPGA, XN, Xscope and other stuff
- Replies: 4
- Views: 5424
FPGA, XN, Xscope and other stuff
Hello, I made a custom board with an XS1-L8-64-TQ128 connected through link B with an Altera FPGA. I ported the existing Verilog code, and it works fine. Now for the XMOS-side problems: 1) How to specify in an XN file that a link is attached to something non-XMOS? If the FPGA is defined as an XMOS ...
- Tue Oct 07, 2014 3:33 pm
- Forum: Q&A
- Topic: Unable to program the SPI flash memory but JTAG appears to b
- Replies: 2
- Views: 2386
Answer
<t>Hi,<br/> <br/> I have exactly the same problem on my board, Xflash compiles and loads the executables but then hangs (or takes an inordinate amount of time to start). What is curious is that 13.0.0 beta1 under CentOs works fine; all the other versions I tried (13.1.0 and 13.2.0 under windows and ...