RM57L843: RM57L843:

Raheel Bari

Part Number: RM57L843

I have 3 Cs on EMIF with one of each connected with DPRAM, SRAM and Flash. Can I short each three Ready / Busy together of all three peripherals together and attached to the only one available wait pin of RM57L843?

Regards;

over 6 years ago

0 QJ Wang over 6 years ago

TI__Guru**** 186256 points

Hello Raheel,

Is the SPRAM in your setup a async memory or a sync memory? If it is a async memory has ready/busy or wait signal, all three wait signal can be ANDed together.

0 Raheel Bari over 6 years ago in reply to QJ Wang

Intellectual 575 points

Wang

Anded means that we directly short.? or we use a simple or gate.

Regards;

0 QJ Wang over 6 years ago in reply to Raheel Bari

TI__Guru**** 186256 points

Hello Raheel,

I mean AND gate. If any one of the devices is busy (LOW), the EMIF_nWAIT is pulled LOW. If 3 busy signals from three devices are tied together, the EMIF_nWAIT may not be asserted if one device is busy (LOW) and other devices is ready (HIGH).

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RM57L843: RM57L843: