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Silicon Motion SM2256 with Toshiba TLC A19 Flash SSD - Exclusive Tests

By: Chris Ramseyer | SSDs in Storage | Posted: Aug 9, 2014 4:50 pm

Silicon Motion SM2256 256GB R&D Board

 

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It's important to keep in mind that we're only doing a preview today with the Silicon Motion R&D board - not a completed, shipping product. It's my understanding that there are very few of these in the world and we are the first outside of SMI to take this combination for a spin.

 

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The R&D design looks like many other SSDs aside from the exotic components. We don't want to call this a reference design since the label doesn't state that it is, and we didn't ask a lot of questions while running up to the room to begin testing.

 

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On the back of the board, there are some power handling surface mount components, eight additional flash package pads and two pads for DRAM.

 

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Here we get our first close up look at the new Silicon Motion SM2256 controller. The controller is labeled SM2256G AA. This is a quad-channel controller with advanced LDPC capability that is able to work with the latest 1z and 1y MLC, as well as TLC.

 

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The Toshiba A19 TLC flash we have on this R&D board uses TSOP to connect to the PCB. The flash is laser etched Toshiba at the top, but a sticker and tape cover the package. This flash is Toshiba part number TH58TEG8TDKTA20. We tried to find more information on Google, but the search engine delivered zero results.

 

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Silicon Motion used DRAM from SK Hynix, part number H5TQ4G63AFA. The SM2256 controller can address both DDR2 and DDR3 DRAM.

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