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About PSZ Field of EIM_CSnGCR1 Register for i.MX6DL

Question asked by yuuki on Sep 19, 2017
Latest reply on Sep 22, 2017 by Artur Petukhov

Dear all,

 

We want to use EIM I/F of i.MX6DL.

We have a question about PSZ Field of EIM_CSnGCR1 Registe.


<Question 1>
What kind of behavior does the setting of PSZ Field give for external device access?

 

<Question 2>
In the case of Async Fix Latency, Does this PSZ field affect it?

 

The following is explained with EIM_WAIT signal,
   "Some External devices may not use this input signal for ready state indication (fix latency without WAIT signal monitoring).
    For these devices EIM should be configured accordingly (see RFL, WFL, and PSZ field descriptions)."

 

And the following is explained with PSZ filed,
   "When working in fix latency mode WAIT signal from the external device is not being monitored,
    PSZ is used to determine if page boundary is reached and renewal of access is preformed."

 

We understand the PSZ determines if page boundary is reached and renewal of access is preformed.

 

However, According to the explanation of RFL and WFL fields.

   "When RFL=1 Burst access is terminated on page boundary and resume on the following page according
    to BL bit field configuration, because WAIT signal is not monitored from the external device."

   "When WFL=1 Burst access is terminated on page boundary and resume on the following page according
    to BL bit field configuration, because WAIT signal is not monitored from the external device."

 

I cannot understand it well.
When PSZ field is used, Is there the detailed explanation other than RM?

 

Best Regards,
Yuuki

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