Shuvalkin, Sergey

I2C Multiple Bus Controller

Hello Sergey,

first of all, thanks for providing the code!!


At the moment i try to simulate your code. I use following parameters:
* Tclk= 32ns
* g_f_clk = 31250
* g_f_scl_0 = 400

When i now measure the times inside my simulator, i recieve following times:
* SCL,low = 1792ns
* SCL,high = 1024ns
* SCL,Tclk = 2816ns => 355.12kHz
* SCL,Duty = 36%

In my opinion would be better to achieve an SCL, duty cycle in normal operation (without clock strecthing) near 50%. Also would it be very nice to get an clock frequency, which meets better the 400kHz setting.

What do you think?



Thanks for your support.

Best Regards,
Andreas

Change SCL Duty cycle to near 50%

Good job!
But I think us_cnt in mbyte.vhd should ms_cnt. :-)

us_cnt in mbyte.vhd

Iicmb will keep busy when slave do not give a ack.And I have to give a stop cmd to make iicmb module not busy.Is this a bug?

Iicmb will keep busy when slave do not give a ack.

I use Isim to simulate the project,report fatal err for package test.

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I2C Multiple Bus Controller