XDIMAX Products Forum

HI, SUB-20 currently supports IEEE 802.3 Clause 22 and Caluse 45 Management Interface Implementation via MDC MDIO http://www.xdimax.com/sub20/doc/HTML/mdio_functions.htm We are currently working on extending it to support CFP MSA Rev 1.4 Specification by http://www.cfp-msa.org/ Actually it is pretty...

Here are two options:

NPN Transistor N-channel MOSFET Consider the fact that

IN="0" OUT= Open Drain
IN="1" OUT= "0"

Well at the first glance the main problem in your flow is switching time between SUB-20 master and SUB-20 slave. It is not guaranteed that sub_fifo_config will do it in 2ms. The problem is not SUB-20 but USB itself. USB latency is around 1-2ms related to 1ms frame delay. Also consider that PC itself...

Hello, we are writing application in vb .net, which communicates with i2c device once as a master and once as a slave in short time (miliseconds) . When the SUB 20 works as a master we do not have problem, but when we switched to the SLAVE mode we are not able to recognize that the data transfer to...

Well with Fast PWM it is not possible as we use for Fast PWM HW module that do not have open-drain output. So I see two possible solutions: 1.You can use external transistor to convert output to open-drain. If you need we can provide reference schematics. 2. With a FW modification I can give you ope...

Sure. You can configure SUB-20 GPIO as input with or without pull-up
Take a look here:
http://www.xdimax.com/sub20/doc/HTML/gpio_functions.htm
We impose via API all functionality available in CPU.

Hi,
It is not safe to have GPIO in output on power-up. You can burn out things doing that. You should have a definite reason to do it and would be interesting to know it. Tell us what do you need it for?

HI,
We did not get any information form Bocdan, so I assume he has found a problem in his code.

HI,
More likely you have a memory leakage that overwrite trace control variable.
First of all I suggest you to run
rc = sub_fifo_read( hndl, in_buff,64,20000);
It is not safe to use less then 64 bytes buffer.

OK,
Now tell me how do you get the trace? Do you turn it on or it shows up sporadically?