EMI /External Memory configuration and control pins

sab964 · ‎2006-06-19

Posted on June 20, 2006 at 06:52

sab964 · ‎2011-05-17

Posted on May 17, 2011 at 09:30

Hello,

I have two questions connecting some external devices to the EMI interface:

1) Do the control pins EMI_WRHn, EMI_BWR_WRLn, EMI_ALE and EMI_RDn provide internal pull ups ????

2)I use multiplexed bus mode. Can I use one bank with 16 Bit data width and another bank with 8 Bit data width (set up with the two bit MW of the register EMI_BCRx) or must all banks use the same data width ?

Thank you again,

Wallie

anis · ‎2011-05-17

Posted on May 17, 2011 at 09:30

Hi Wallie,

I have the answer for your question2:

Yes , it is possible to have different data width 8 and 16bit for the two banks, in fact you have configuration registers for each bank for selecting the bus width.

For question1, I have forwarded your question and I let you know when I have the answer.

Best Regards,

STARM