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© Copyright 2013 Silicon Motion, Inc.
SM2703
The SM2703 is the state-of-the-art SD memory card
controller that complies with the latest SD 3.0x
specifications. The SM2703 is targeted for portable,
stationary and embedded applications by supporting
full coverage of card capacity including High Capacity
SD Memory Card (SDHC) and Extended Capacity SD
Memory Card (SDXC, more than 32GB and up to
128GB). The advanced security and partitioning
functions just fit the requirements for mobile devices,
including SmartPhone, navigation devices, and
MP3/MP4 media players.
The SM2703 supports the high speed NAND interface,
including ONFI 2.x and Toggle mode, to achieve the
maximum data transfer rate for ever higher
performance. With Silicon Motion’s enhanced flash
technologies, and the powerful, configurable BCH ECC
engine, the SM2703 provides superior security,
flexibility and performance for mainstream products
in the market.
Hightlights
The most cost-effective UHS-I controller in the
marketplace with unparalleled TLC NAND flash
support, offering read speed of up to 95MB/s
Superior full HD video recording performance in
both Class 4 and Class 6 devices using only one
TLC die or chip
Enables consumers to have a better experience in
utilizing more advanced imaging capabilities,
including high megapixel image capture, as well
as full HD video and 3D video recording and
playback on their mobile devices
Powerful configurable ECC engine that can
significantly improve device endurance
Strong ESD protection meeting the criteria of +/-
6KV in contact discharge measurement
Ultra low standby and operating power
consumption (as measure at 85°C)
Key Features
SD 3.0x Interface
Complies to SD specifications version 2.x/3.0x
(UHS104)
Supports dual voltage 3.3V and 1.8V host
interface power supply
Supports password protection of cards
Switch function command supports Bus Speed
Mode, Command System and future functions
Bus Speed Mode:
- DS: Default Speed mode: 3.3V signaling,
frequency up to 25 MHz, up to 12.5 MB/sec
- HS: High Speed mode: 3.3V signaling,
frequency up to 50 MHz, up to 25 MB/sec
- SD: 1.8V signaling, frequency up to 25 MHz,
up to 12.5 MB/sec
- SDR12: 1.8V signaling, frequency up to 25
MHz, up to 12.5 MB/sec
- SDR25: 1.8V signaling, frequency up to 50
MHz, up to 25 MB/sec
- SDR50: 1.8V signaling, frequency up to 100
MHz, up to 50 MB/sec
- SDR104: 1.8V signaling, frequency up to 208
MHz, up to 104 MB/sec
- DDR50: 1.8V signaling, frequency up to 50
MHz, sampled on both clock edges, up to 50
MB/sec
Flash Interface
Single channel 8-bit flash interface
Supports up to 4 CE pin function
Global Wear Leveling
Configurable BCH ECC engine
- Zero overhead in the error correction
pipeline to read performance
- Internal data shaping support to increase
data endurance
Supports Samsung/SanDisk/Toshiba/SK
Hynix/Micron/Intel NAND Flash
Supports 2xnm/2ynm/1xnm/1ynm MLC/TLC
Supports 3.3V NAND interface only
Supports Toggle NAND
Supports the ONFI 2.x NAND
Supports 1/2/4-way interleave operation
Supports 2-plane/4-plane operation
Supports 128/192/256/512 page blocks
SD Host
SD 3.0x
Interface
D-RAM
Flash Interface
(Configurable
ECC)
P-RAMP-ROM
Micro
Processor
NAND
Flash
(1 pages)
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