 Simple Wireless Operation by Just
Bringing Two Devices Close Together |
|
The intuitive "TransferJet" interface does
away with the complex connection settings
of existing wireless technologies by enabling
wireless communication between two devices
by simply bringing them close together.
|
| SDIO UHS-I for High Effective
Transfer Rate |
|
The CXD3271GW employs the SDIO
UHS-I, an up-and-coming technology, as a
mobile device host interface. (See table 1.) Optimizing internal buffers and redesigning
the device drivers have trebled the effective
transfer rate to 350 Mbps or more when
compared to the existing CXD3268AGW.
(See figures 1 and 2.) |
| Fewer External Components
and Smaller Package |
|
The RF balun, RF switch for transmitter/receiver and LDO that were external parts
for the existing product have been integrated
into the CXD3271GW. The One-Time-
Programmable memory for writing wireless
setup data have also been integrated into the
chip eliminating the need for an EEPROM.
And thanks to the use of a Fractional-N
PLL technique the resulting multi-reference
clock functionality enables use of external
clocks obviating the need for a dedicated
external crystal oscillator. All this means
that "TransferJet" functionality reduces the
number of parts and the occupied area by
60% simplifying implementation in mobile
devices where compact size and lower cost is
of the essence. (See figure 3.) |
| Reduced Power Consumption |
|
Implementing the CXD3271GW as a single
chip in the CMOS process has reduced power
consumption during reception by 34% over
its predecessor.
In addition, power management over operating status has reduced power consumption during
waiting (in intermittent reception) by 36%
over its predecessor. (See figure 4.) As a
result, even if the TransferJet function can be
constantly on without impacting the operating
time of a mobile device, which increases user
convenience. |
| Software Development Kit (SDK)
for Android™*4 and Linux |
|
SDK for Android™ is now provided in
addition to existing SDK for Linux OS.
The SDK is comprised of CXD3271GW
device drivers, middleware compliant with
TransferJet™ protocol specifications (SCSI,
OBEX, etc.), sample applications and other
tools that reduce the software development
time.
*4: Android is a trademark or registered trademark
of Google Incorporated.
|
Sony Corporation Global Headquarters
TransferJet™ Compliant Close Proximity
Wireless Transfer IC for Mobile Devices
Supporting SDIO UHS-I
Vol.68