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Discussion Groups | Analog Devices DSPs | SDRAM to ADSP-21065L

Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).

  

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SDRAM to ADSP-21065L - "Allia Donna D. Go" - Jul 24 21:08:58 2007



hi!

i am interfacing an SDRAM with ADSP-21065L EZ kit Lite board for
memory expansion using EMAFE. the problem is, there are pins in SDRAM
that are not specified in the dsp board. the following are the pins
that i don't know where to connect :) :

write enable
chip select
clock enable
row address strobe
column address strobe
data input/output mask

the SDRAM i'm using operates at 133MHz. will i connect the clock of
the SDRAM to the transmit clock of the EMAFE?

thank you!



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Re: SDRAM to ADSP-21065L - tube...@interia.pl - Jul 26 8:47:02 2007

Some info are in Handbook  of EZ kit 21065L 
7 pin con. named J9 on the board has those singnals 
Handbook says  that EMAFE is exp. slot for user designed boards with codecs.
This handbook also have a schematic of  system board i think it would be heplfull .   System
clock is 33Mhz internal DSP clock is 66Mhz.
Lucas
>
>i am interfacing an SDRAM with ADSP-21065L EZ kit Lite board for
>memory expansion using EMAFE. the problem is, there are pins in SDRAM
>that are not specified in the dsp board. the following are the pins
>that i don't know where to connect :) :
>
>write enable
>chip select
>clock enable
>row address strobe
>column address strobe
>data input/output mask
>
>the SDRAM i'm using operates at 133MHz. will i connect the clock of
>the SDRAM to the transmit clock of the EMAFE?
>
>thank you!



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