Hi Gerald and Jason,

Thank You for the reply. 
I got doubt because GPMC_AX lines were utilized for some other purposes. So 
first I thought that BBB is not designed to have external parallel 
interface. But later I found that GPMC_AD0-AD16 are  freely available and 
with ALE signal, Data and Address bus can be multiplexed. 


 

Also I think, even though AD0-AD7 lines are connected to MMC1, since 
Address, Data lines may be connected to many devices, and one particular 
device will be selected only when its CS signal is active, there won't be 
any issues.



Thank You very much.


Thanks & Regards,
Sajeevan.K


On Friday, June 30, 2017 at 5:56:23 PM UTC+5:30, Jason Kridner wrote:
>
> There is a peripheral called the GPMC -- general purpose memory controller 
> -- which is pretty good at SRAM-style interfaces. 
>
> On Jun 30, 2017, at 7:46 AM, Gerald Coley <[email protected] 
> <javascript:>> wrote:
>
> It is feasible.
>
>  
>
> Gerald
>
>  
>
> *From:* [email protected] <javascript:> [
> mailto:[email protected] <javascript:>] *On Behalf Of *sajeevan k
> *Sent:* Thursday, June 29, 2017 11:48 PM
> *To:* BeagleBoard <[email protected] <javascript:>>
> *Subject:* [beagleboard] Re: DPRAM interface with BBB
>
>  
>
> Hi all,
>
> Any comments about the feasibility of DPRAM interface with BeagleBone 
> Black will be highly appreciated? Please...
>
>
> Thanks & Regards,
> Sajeevan.K
>
> On Tuesday, June 27, 2017 at 1:59:51 PM UTC+5:30, sajeevan k wrote:
>
> Hi all,
>
>  
>
> Is it possible to interface an Asynchronous DPRAM (with 16 address lines 
> and 16 data lines) with BBB?
>
>  
>
> Is there any block diagram (circuit diagram), which shows the connections, 
> available?
>
>  
>
> Can we use GPMC_ADO-GPMC-AD15 pins as Address and Data mux pins with 
> GPMC_ADVN_ALE?
>
>  
>
> Also I think GPMC_Ax pins are not required, since we can use Address-Data 
> multiplexing with ALE signal.
>
>  
>
> I think all the required pins are coming out in P8 connector. 
>
> 1) GPMC_ADO-GPMC-AD15
>
> 2) GPMC_ADVN_ALE
>
> 3) GPMC_WEN
>
> 4) GPMC_OEN_REN
>
> 5) GPMC_BE1N
>
> 6) GPMC_CSN0
>
>  
>
> But GMC_AD0-GPMC-AD7 are also connected to MMC1_D0 to MMC1_D7. Will this 
> cause any problem to the functoining of DPRAM? Or will the DPRAM 
> functioning cause any problem to MMC1.
>
>  
>
> Have anybody interfaced DPRAM with BBB? Please share your experience. 
>
>  
>
> Thanks and Regards,
>
> Sajeevan.K
>
> -- 
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