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How to use wait signal with an Asyncronus mode of i.MX6

Question asked by yuuki on Jan 23, 2015
Latest reply on Jan 23, 2015 by igorpadykov

Dear all,

 

We connect FPGA to EIM of i.MX6.
We want to use a Wait(Ready) signal with an Asyncronus mode, because FPGA uses the Wait signal.

However, the EIM_WAIT signal is used only by a synchronous mode.

 

We understood as follows.
Is this understanding right?

 

- To use a wait signal with an Asyncronus mode, it is necessary to use the DTACK mode.
- A Wait signal of FPGA is connected to the EIM_DTACK_B of i.MX6.
- DTACK signal is sampled at rising edge of first ACLK after DTACK assertion.

 

Best Regards,
Yuuki

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