Silicon Motion SM2256 256GB R&D Board
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.
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.
On the back of the board, there are some power handling surface mount components, eight additional flash package pads and two pads for DRAM.
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.
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.
Silicon Motion used DRAM from SK Hynix, part number H5TQ4G63AFA. The SM2256 controller can address both DDR2 and DDR3 DRAM.
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- Page 1 [Introduction & Specifications, Pricing and Availability]
- Page 2 [Silicon Motion SM2256 Controller]
- Page 3 [Toshiba A19 3-bit per cell TLC Flash & Shots Fired]
- Page 4 [Silicon Motion SM2256 256GB R&D Board]
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