Design World

Interface ICs for Connecting Displays & Keyboards

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[[{“fid”:”247700″,”view_mode”:”media_original”,”type”:”media”,”attributes”:{“height”:280,”width”:350,”style”:”float: right; margin: 10px;”,”class”:”media-element file-media-original”}}]]Texas Instruments (Dallas, TX) has introduced 2 new devices to ease design for tablet designers: The TCA8424 is a human interface device (HID) over I2C, 128-key keyboard controller. The SN65DSI85 is a digital serial interface (DSI) to FlatLink interface IC that makes it easier for designers to connect graphics processors to LCD panels.

Features of the TCA8424 include:

  • Extended keyboard support: Up to 128 (8 by 16) key scan that supports standard keyboard plus additional custom keys.
  • Simultaneous key press detection: Fixed-length, eight-byte input report, can detect up to 14 simultaneous key presses, including modifiers, allowing the end equipment to be used in applications like gaming.
  • Hardware-coded HID and REPORT descriptors.

Features of the SN65DSI85 include:

  • An optimized MIPI DSI interface: Dual 4-lane MIPI DSI port to dual link 18/24-bpp FlatLink is compatible with a wide range of graphics processors up to WQXGA (2500 by 1600p) resolution at 60 frames per second.
  • Small design (5 x 5 mm).
  • High video bandwidth support: LVDS pixel clock operates up to 154 MHz, and each DSI lane runs at 1 Gbps, offering a maximum input bandwidth of 8 Gbps for industry-leading data throughput.

For more information, visit www.ti.com/tca8424-pr and www.ti.com/sn65dsi85-pr.

Filed Under: Rapid prototyping

 

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