Introducing the CM5100 Dual Display and Audio Controller Fully MDDI Compliant Serial Display/Audio Controller for Wireless Handsets |
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MOBILE DISPLAY TRENDS “The
new CM5100 controller delivers the complete value proposition
of MDDI based display interfaces....[it] offers designers the
ability to take full advantage of the functionality defined in
the MDDI standard”.
With the emergence of advanced multimedia
capabilities in mobile handsets, data rates between the handset’s
host processor and its display and camera modules have steadily
increased. Wider data busses operating at higher frequencies have
been implemented between these modules, resulting in significant
increases in power consumption, routing complexity, sensitivity
to EMI radiation and cost. To alleviate these concerns, Qualcomm
defined the MDDI specification, which consists of a high speed low
power interface carrying video, audio and control packets to connect
the host processor to the display module. Qualcomm’s chipsets
integrate an MDDI host and an MDDI client solution is required adjacent
to the display module to direct the data streams to the appropriate
resources. - According to Mike Concannon, Vice President of Strategic Products for QUALCOMM CDMA Technologies Today, advanced displays for mobile handsets feature resolutions of QVGA or greater. To address the finer pixel pitch requirements of these small, high resolution displays, manufacturers are adopting new design approaches based upon low temperature polysilicon (LTPS) and amorphous silicon (aSi) TFT architectures that allow the display drivers to be deposited directly on the display’s glass substrate, resulting in a reduced bill of materials. CM5100 KEY FEATURE SUMMARY The CM5100 supports all necessary video, audio and control packet types recommended by the MDDI specification. The integrated MDDI client transceiver is Type I (internal mode, 15 cm maximum cable length), consisting of one data pair, one strobe pair and a dedicated power supply pair that can support a data rate of up to 385Mbps. As a result, the CM5100 requires only six lines operating at lower power compared to traditional parallel interfaces that could include up to sixty lines to control both displays and other resources. The internal video mapper contained in the CM5100 enables it to operate as a display controller with an integrated frame buffer for a main panel of up to QVGA resolution through a standard RGB interface, and support a secondary “smart” display through a CPU type of interface. Audio packets can also be transferred through the MDDI pipe and be redirected to a local stereo audio codec through the I2S interface. The I2C host interface allows connecting the CM5100 to any I2C slave device allowing it to be controlled through the MDDI interface. The CM5100 is developed in a low power process technology and features extensive power management modes to provide minimal power consumption. The CM5100, housed in a 100 bump, 0.5mm pitch Wafer Level Chip Scale Package with a form factor of just 5.0mm x 5.0mm, is the industry’s smallest MDDI based display controller.
PRICING AND AVAILABILITY Evaluation boards and chip samples of the CM5100 are available now. Chip pricing starts at $6.00 in 1,000 unit quantities. Volume production is scheduled for Q4 2006. |
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