[SI-LIST] Re: Termination of Address lines
- From: steve weir <weirsi@xxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Fri, 27 May 2011 05:51:00 -0700
You can obtain a copy of the specification: JESD79-2C from JEDEC.
Address and control must be terminated, 50 Ohms to Vtt = Vref +/-40mV.
Steve
On 5/26/2011 7:09 AM, sudarshan kr wrote:
> Hi All,
> We are designing a board with an ASIC and the DDR2(1066) device. We have a
> 32 bit interface where in we are using 2 x16 devices.
> Since the Address bus is shared from the ASIC to the DDR2 device,
> 1. Is it mandaotory to use the external termination on the Address lines.
> 2. If yes, what is the value to be choosea and what kind of termination to
> be provided
>
> Thnaks in advance
>
> Regards,
> Sudarshan
>
>
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Steve Weir
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