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TMS320F28375D: About Extended Wait Mode (Figure 5-24)

user6017635

Prodigy 30 points

Part Number: TMS320F28375D

Hi,

In a case of Extend Wait mode (ASYNC_CS2_CR[30](EW) = 1),

will extended wait cycles be inserted under the follwing conditions?

Althought we implemented under the condition (1),

the extended wait cycles were actually inserted.

Regards,

over 6 years ago

0 Vivek Singh over 6 years ago

TI__Guru** 115271 points

Hi,

Yes, it can happen. In datasheet the number given is min pulse width to guarantee the sampling of the WAIT pulse. If it's less than that then it's not guaranteed that pulse will be captured but it does not mean that it will never be captured.

Hope this is clear.

Regards,
Vivek Singh

0 user6017635 over 6 years ago in reply to Vivek Singh

Prodigy 30 points

Hi Vivek,

Thank you for your reply.

I want to know following two points.

(1) In following cases, Timing Requirement NO.2(Table 5-37) is fulfilled?
(Is it all right if EMxWAIT is asserted before STROBE phase?)

(2) In a following case, Timing Requirement NO.28(Table 5-37) is fulfilled?
(Is it guaranteed that extended wait cycles will be inserted?)

Regards,

0 user6017635 over 6 years ago in reply to Vivek Singh

Prodigy 30 points

Hi Vivek,

Could you please give some comments on it?

Regards,

0 Vivek Singh over 6 years ago in reply to user6017635

TI__Guru** 115271 points

Hi,

Sorry for late reply. Yes, as long as given time lines are met, access will be extended based on WAIT signal.

Regards,
Vivek Singh